Lift-Up Gutter Trailer Door Gas Strut Conversion Kit | GutterAll
Lift-Up Gutter Trailer Door Gas Strut Conversion Kit | GutterAll
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Heavy-Duty Lift-Up Trailer Door Gas Strut Conversion Kit
Gas Strut Kit Only | Hinge and Welding Not Included | Professional Fabrication Required | For Enclosed Gutter Trailers and Contractor Cargo Trailers | Contact for Local Conversion Options
This Is a Strut Kit — Not a Complete Bolt-On Conversion
This listing is for the heavy-duty gas strut kit only. The hinge, welding, structural reinforcement, and all installation labor are not included. A lift-up trailer door conversion requires professional fabrication. The original lower ramp-door hinge must typically be relocated or replaced with a properly rated top-mounted structural hinge. Professional trailer fabrication experience is required for this conversion.
Local conversion coordination may be available through independent fabrication partners for an additional fee. Start a chat or call (503) 850-6784 to ask about local conversion review options.
Run gutters under cover — without walking over a ramp.
This heavy-duty gas strut kit supports a professional lift-up trailer door conversion, helping turn the back of a gutter trailer into a cleaner, more open, more comfortable mobile production area — with the rear door lifted overhead instead of dropped across the workspace.
The Problem With Standard Trailer Ramp Doors on Gutter Trailers
A standard enclosed trailer ramp door opens by folding down to the ground. On most cargo and contractor trailers, that ramp serves a logical purpose — loading equipment on and off with a wheeled cart or pallet jack. But on a seamless gutter machine trailer, that ramp becomes an obstacle instead of a tool.
When a gutter contractor sets up on a job site, the back of the trailer is the production zone. The coil sits inside. The gutter machine feeds out the rear. The gutter run exits the machine and travels away from the trailer toward the house. Every inch of space behind that trailer is working space — and a folded-down ramp door occupies exactly that space, lying flat across the ground where the crew needs to stand, move, and manage material.
Installers end up stepping over the door, working around it, or propping it partially open — none of which are designed solutions. In the heat of summer, there is no overhead shade over the fabrication area. In the rain, the crew and the machine take the weather directly. The standard ramp door was never engineered for mobile gutter production.
A lift-up trailer door conversion — where the rear door is rehung on a top hinge and supported overhead by heavy-duty gas struts, gas springs, or gas lifts — solves all of this. The door lifts up and out of the workspace entirely. The production zone behind the trailer opens up. The raised door acts as a canopy overhead, providing shade from direct sun and partial protection from light rain. The crew works more comfortably, moves freely around the gutter machine, and the trailer setup looks intentional and contractor-grade.
Standard Ramp Door — The Problems
- Door drops to the ground in the production zone
- Crew walks over or around the ramp constantly
- Blocks the work area directly behind the gutter machine
- No overhead shade — full sun on hot days
- No overhead cover — full rain exposure
- Awkward to partially prop — not a real solution
- Difficult to route gutter material around the door
- Looks improvised, not purpose-built
Lift-Up Door Conversion — The Benefits
- Door lifts overhead — completely out of the work path
- Crew moves freely in the rear production zone
- Full rear opening available for gutter machine access
- Overhead canopy reduces direct sun on the crew
- Partial rain protection keeps the work area drier
- Door stays positively held up by gas struts
- Gutter material exits cleanly without routing around the door
- Purpose-built mobile shop appearance
Key Benefits at a Glance
Keep the rear of the trailer clear for production — no ramp across the floor of the work zone.
The raised door acts as an overhead canopy — partial protection from light rain and direct sun while manufacturing gutters.
Heavy-duty gas springs hold the door positively in the raised position — no propping, no improvised support required.
The lift-up trailer door conversion gives the setup a purposeful, contractor-grade appearance on every job site.
Built for Gutter Contractors and Seamless Gutter Machine Trailers
When manufacturing gutters on location, the back of the enclosed trailer is the entire production environment. The seamless gutter machine runs at the rear opening. Material exits the machine and travels down the run. The crew manages length, cuts, outlets, and endcaps all within a few feet of that rear opening.
A ramp door lying on the ground across that zone — the standard configuration on most cargo trailer ramp-door setups — puts a physical obstacle exactly where the crew and material need to move. Contractors use a gutter trailer differently than a cargo hauler uses a standard cargo trailer, and the standard door configuration reflects that mismatch.
A lift-up rear door, held in the raised position by heavy-duty gas lifts, eliminates the ramp-as-floor-obstacle problem and adds functional overhead coverage. The result is a mobile gutter shop where the crew can move efficiently and stay more comfortable throughout the production day.
Keep the rear of the trailer open instead of blocked by a door lying flat on the ground.
The raised door overhead helps reduce direct sun over the production area — a meaningful difference on a full summer workday.
Stay more productive through light weather — partial overhead cover extends the working window on days with intermittent rain.
The lift-up rear door gives the gutter trailer a more professional, intentional appearance on residential job sites.
Move freely around the seamless gutter machine and material without stepping around or over a lowered ramp.
Arriving with a purpose-built trailer setup signals professionalism — organized, intentional, and contractor-grade from first look.
Product Description
The GutterAll heavy-duty lift-up trailer door gas strut kit — also known as a gas spring kit, gas lift support kit, or gas prop conversion kit — is a purpose-selected set of heavy-duty gas cylinders and mounting hardware intended for use in professionally converting an enclosed trailer ramp door from its standard bottom-hinged, fold-down configuration to a top-hinged, lift-up overhead configuration.
Gas struts — also called gas springs, gas dampers, gas lifters, or gas-charged linear actuators — use compressed gas to generate extension force over their stroke length. When sized and mounted correctly for the door's weight and geometry, they hold the raised door positively in the open position without external bracing. On a lift-up trailer door conversion, two matched gas struts provide the balanced support force needed to hold a large, heavy trailer door overhead safely and consistently.
This kit is positioned specifically for enclosed gutter machine trailers where the standard ramp door interferes with on-site gutter production. It is also suitable for mobile workshop trailers, enclosed cargo trailers, contractor service trailers, race trailers, and any enclosed trailer application where the owner wants to convert a standard bottom-hinged ramp door to open upward instead of downward.
Product Summary
| Product | Key Specs |
|---|---|
| Heavy-Duty Lift-Up Trailer Door Gas Strut Kit | Strut kit only — hinge and installation not included |
| Kit Contents | Two heavy-duty gas struts, end fittings, mounting brackets, fitment guidance |
| Primary Application | Enclosed gutter trailer rear door lift-up conversion |
| Also Used For | Cargo trailers, contractor trailers, mobile workshop trailers, race trailers |
| Not Included | Hinge, welding, reinforcement, installation labor |
| Installation Requirement | Professional trailer fabrication required |
Why the Lift-Up Door Conversion Matters for Gutter Contractors
The Ramp Is the Problem
On a gutter production trailer, the ramp door landing in the work zone creates a daily obstacle that slows production, complicates material routing, and forces the crew to work around equipment instead of with it.
Gas Struts Are the Reliable Solution
Gas springs provide consistent, measurable extension force matched to the door's weight and geometry. Unlike chains, ropes, or improvised props, properly selected and mounted gas struts hold the door positively and predictably in the raised position.
Comfort Extends the Production Day
Working outdoors in direct sun or light rain is fatiguing. Overhead coverage from the raised door reduces fatigue, improves crew morale, and keeps production moving through conditions that would otherwise slow work down.
It Signals a Professional Operation
Homeowners evaluate contractors before and during the job. A purpose-built lift-up trailer setup on the driveway signals the crew is organized, prepared, and running a real commercial gutter operation — not an improvised setup.
Contractor Applications
| Application | Situation | Why It Helps |
|---|---|---|
| Seamless Gutter Production | Manufacturing gutters on location from an enclosed trailer | Lifts the rear door overhead to clear the production zone — gutter machine access, material routing, and crew movement all improve immediately |
| Hot Weather Jobs | Summer production days with direct sun on the crew | Overhead door acts as a sun shade — reduces heat exposure and fatigue during long production days |
| Light Rain Production | Intermittent rain that would otherwise halt gutter manufacturing | Partial overhead cover from the raised door extends production windows — keeps the machine and crew drier through light weather |
| Residential Job Site Appearance | Working in front of occupied homes with homeowners present | A purpose-built lift-up trailer conversion looks professional, organized, and intentional — supports confidence in the contractor |
| Mobile Contractor Trailers | Any contractor using an enclosed trailer as a mobile work platform | Converts a standard ramp-door cargo trailer into a functional covered mobile workstation — applicable beyond gutter trailers |
How the Gas Strut Lift-Up Conversion Works
A standard enclosed trailer ramp door is hinged at the bottom of the rear opening. Opening it means the door falls away from the trailer, creating the ramp angle. The weight of the door is managed by a spring-assist or cable-torsion system built into the original hinge assembly.
A lift-up conversion reverses this arrangement. The door is rehung on a structural top hinge, repositioned at the top of the rear opening. When opened, the door swings upward and outward overhead instead of downward. The original bottom hinge and spring-assist hardware must be removed or replaced as part of the conversion — this is why professional fabrication is required.
The gas struts — also called gas shocks, gas cylinders, or gas-charged props — provide the force needed to hold the door in the raised position. Each gas spring generates extension force calibrated to the door's weight and the geometry of the mount points. Two matched struts installed symmetrically provide balanced support across the full width of the door, holding it consistently in the overhead position without sagging, drifting, or requiring an external prop.
The mounting brackets included in the kit attach to structural framing on the trailer body and on the door frame. Proper strut selection requires knowing the door's weight, the target open angle, and the available mounting geometry. This information should be gathered and reviewed by a qualified trailer fabricator before installation begins.
What Is Included — and What Is Not
Included in This Kit
- Two heavy-duty gas struts (matched pair)
- Gas strut end fittings
- Mounting brackets
- Basic fitment planning guidance and checklist
Note: Final strut force rating, stroke length, and extended length must be confirmed against actual strut specifications before installation. Contact GutterAll to confirm kit specifications for your trailer application.
Not Included in This Kit
- Trailer door hinge (top hinge required)
- Welding or fabrication labor
- Structural reinforcement materials
- Removal or relocation of original bottom hinge
- Door seals, drip rails, or weather stripping
- Latches or locking hardware
- Ramp spring, cable, or torsion system modifications
- Mechanical safety props or secondary restraints
- Installation labor of any kind
Key Features
| Feature | Description | Contractor Benefit |
|---|---|---|
| Heavy-Duty Gas Struts | Matched pair of high-force gas springs selected for trailer door support | Holds a full-size trailer door positively overhead — no external prop required |
| Matched Pair | Two struts with equal force ratings for balanced door support | Prevents door from racking or settling unevenly in the raised position |
| Mounting Brackets Included | Structural mounting hardware for strut-to-frame attachment | Reduces sourcing time — fabricator receives hardware with the struts |
| Fitment Planning Guidance | Checklist and guidance for pre-installation trailer assessment | Helps contractor or fabricator identify requirements before work begins |
| Gutter Trailer Focused | Kit positioned specifically for seamless gutter machine trailer conversion | Not a generic strut kit — selected for the specific demands of gutter production trailer door applications |
| Local Conversion Options | Coordination with independent fabrication partners may be available locally | Contractors near Damascus, OR can inquire about complete conversion service through GutterAll |
Critical Installation Notice — Professional Fabrication Required
This is not a simple hardware swap. A lift-up trailer door conversion requires a qualified trailer fabricator to inspect the trailer door, rear header, frame, hinge system, and existing ramp-assist hardware before any work begins.
- The original lower ramp-door hinge must typically be removed or replaced with a properly rated top-mounted structural hinge
- The top rear trailer frame and upper door edge may require structural reinforcement before hinge and strut brackets are installed
- Gas strut mounting brackets must attach to structural framing — not trailer skin, plywood liner, or unsupported sheet metal
- Strut force, stroke length, and mounting geometry must be calculated from the actual door's weight and dimensions
- Professional welding and trailer fabrication experience are required
Local conversion coordination may be available for customers near our Damascus, OR location through independent trailer fabrication partners. Start a chat or call (503) 850-6784 to ask about local conversion review options.
Before Ordering — What Your Fabricator Will Need to Know
A lift-up door conversion is not one-size-fits-all. The strut force, bracket mounting points, and structural reinforcement requirements are all specific to the trailer. Before ordering the kit or requesting a local conversion review, gather the following information about the trailer:
Not sure if your trailer qualifies? Start a chat on the GutterAll website or call (503) 850-6784 with your trailer details and photos. Local conversion review may be available for customers in the Portland Metro / Damascus, OR area.
Need the Complete Conversion? Local Service May Be Available.
Local professional conversion coordination may be available for customers near the Damascus, OR location. GutterAll works with independent local fabrication partners who have the welding and trailer-modification capabilities needed to inspect the trailer, reinforce the structure, relocate or replace the hinge, install the struts, and test the completed door.
The conversion service is available for an additional fee, for local customers only, and must be quoted after inspection. GutterAll does not directly perform the installation — local coordination is through independent fabrication partners.
| Service | Price Guidance |
|---|---|
| Local Conversion Evaluation | $199 (may be credited toward completed conversion) |
| Professional Lift-Up Conversion | Starting at $2,995 |
| Complete Gutter Trailer Conversion | $3,495–$4,250+ typical range |
| Oversized / Aluminum / Modified Trailers | Custom quote required |
Evaluation fee may be credited toward the completed conversion if the project is approved. Start a chat or call (503) 850-6784 to request a local conversion review.
Summary
The GutterAll heavy-duty lift-up trailer door gas strut kit is a purpose-selected set of heavy-duty gas springs, end fittings, and mounting brackets designed for use in professionally converting an enclosed trailer rear ramp door from a standard bottom-hinged, fold-down configuration to a top-hinged, lift-up overhead canopy position. The kit is primarily positioned for gutter contractors operating seamless gutter machine trailers, where the standard ramp door interferes with on-location production by blocking the rear work zone, exposing the crew to weather, and creating an improvised setup that signals anything but a professional operation.
The kit includes two matched heavy-duty gas struts, end fittings, mounting brackets, and fitment planning guidance. The hinge, welding, structural reinforcement, and installation labor are not included and must be performed by a qualified trailer fabricator. Local conversion coordination may be available through independent fabrication partners for customers in the Damascus, OR area — contact GutterAll at (503) 850-6784 or sales@gutterall.com to discuss. GutterAll is located at 19759 SE Sunnyside Rd, Damascus, OR 97089 and serves gutter contractors, roofing companies, and property owners throughout Portland Metro and the Pacific Northwest. In-store pickup, local delivery, and shipping are all available.
15 Reasons Gutter Contractors Choose the Lift-Up Conversion Kit
- Clears the rear work zone: Door lifts overhead — production area stays fully open
- Eliminates the ramp obstacle: No door lying across the floor where the crew works
- Overhead sun shade: Reduces direct sun exposure during hot production days
- Light rain protection: Partial overhead cover extends productive hours through weather
- Gas strut positive hold: Door stays raised — no prop, no rope, no improvising
- Balanced matched pair: Two equal-force struts prevent door racking or uneven hang
- Mounting brackets included: Less sourcing work for the fabricator
- Fitment checklist included: Helps fabricator assess the trailer before starting
- Gutter trailer specific: Designed for the actual production demands of gutter machine trailers
- Professional appearance: Lift-up setup signals a purpose-built mobile gutter shop
- Improves machine access: No navigating around a dropped ramp near the gutter machine
- Material routing cleaner: Gutter sections exit the machine without routing around the door
- Local conversion options: Full conversion coordination may be available near Damascus, OR
- Crew morale and comfort: More comfortable working conditions in sun and light rain
- In-store pickup, delivery, or shipping: Three fulfillment options available
Product Specifications
| Product Type | Heavy-duty gas strut conversion kit for trailer door lift-up modification |
|---|---|
| Kit Contents | Two gas struts (matched pair), end fittings, mounting brackets, fitment checklist |
| Gas Strut Type | Heavy-duty gas springs / gas lift supports / gas cylinders |
| Quantity | Two struts (one matched pair — always replaced and installed in pairs) |
| Primary Application | Enclosed gutter trailer rear ramp door lift-up conversion |
| Secondary Applications | Cargo trailers, contractor service trailers, mobile workshop trailers, race trailers |
| Hinge Included | No — top-mounted structural hinge must be sourced and installed separately |
| Installation Type | Professional trailer fabrication required — not a self-install kit |
| Frame Compatibility | Fabricator to confirm steel or aluminum trailer frame compatibility prior to installation |
| Strut Force / Stroke Specs | Contact GutterAll to confirm — must be matched to actual door weight and geometry |
| Expected Service Life | Heavy-duty gas struts are rated for extended cycle life — actual service life depends on door weight, cycle frequency, and installation quality |
| Local Conversion Service | Available through independent fabrication partners near Damascus, OR — contact for evaluation |
Who Uses the Lift-Up Trailer Door Gas Strut Conversion Kit
Gutter Contractors and Seamless Gutter Installers
- Primary market — the conversion was designed for this application
- Contractors running enclosed gutter machine trailers on residential jobs
- Owners looking to improve on-location production comfort and efficiency
- Companies upgrading existing trailer setups to purpose-built mobile gutter shops
- Multi-crew operations where rear workspace management matters
The advantage: Clear production zone, overhead cover, and professional site appearance on every job.
General Contractors and Mobile Workshop Operators
- Contractors using enclosed trailers as mobile work platforms
- Mobile fabrication and machining trailers
- Electrical, plumbing, and HVAC contractors with equipment trailers
- Race teams and motorsport trailers wanting lift-up access
- Any contractor wanting to convert a standard ramp-door cargo trailer
The advantage: Rear door converts from ramp obstacle to overhead canopy for any mobile workshop application.
Property Owners and DIY Trailer Builders
- Owners with access to a qualified trailer fabricator
- DIY trailer build-outs requiring a lift-up rear door
- Enthusiasts wanting a custom enclosed trailer setup
- Property managers with maintenance trailer fleets
- Anyone with a ramp-door trailer they want to convert — with professional help
The advantage: Kit provides the gas struts and hardware — fabricator provides the structural work.
Lift-Up Trailer Door Conversion — Process Overview (10 Steps)
Important: This overview is for general reference. Actual installation must be performed by a qualified trailer fabricator. Do not attempt this conversion without professional fabrication experience and proper equipment.
- Assess the trailer: Fabricator inspects the rear door, rear header, frame material, existing hinge system, and any spring, cable, or torsion ramp-assist hardware currently installed.
- Measure the door: Measure door height, width, and estimated weight. Confirm the top frame header dimensions and available strut mounting geometry on the door and trailer body.
- Select strut specifications: Based on door weight and target open angle, confirm that the included gas struts match the required force rating and stroke length for the specific door. Contact GutterAll if confirmation is needed.
- Remove original ramp-assist hardware: Remove the existing spring, cable, or torsion ramp-assist system. Retain hardware if reuse is possible for another application.
- Remove or relocate the original bottom hinge: The existing bottom-mounted ramp hinge must be removed or relocated — it is not compatible with the lift-up configuration. This step typically requires cutting and grinding.
- Reinforce the top frame header if required: The top rear trailer frame and upper door edge must be structurally sound before the new hinge is mounted. Fabricator determines whether additional reinforcement or gusseting is needed.
- Install top-mounted structural hinge: A properly rated top hinge — not included in this kit — must be welded or bolted to the top of the rear trailer opening and the top edge of the door. This hinge bears the full weight of the door.
- Mount gas strut brackets: Install the mounting brackets from this kit onto structural framing on the trailer body and the door frame — not on trailer skin, liner, or unsupported sheet metal. Fabricator determines optimal bracket placement geometry.
- Install gas struts: Attach the gas struts from this kit to the installed mounting brackets. Confirm the struts are seated correctly on their end fittings and that the extension direction aligns properly for the lift-up motion.
- Test and verify: Test the door through several open-close cycles. Confirm the gas struts hold the door in the raised position without drift. Confirm the door seals correctly when closed. Fabricator checks all welds, bracket attachment points, and hinge integrity before the conversion is considered complete.
Pro Tip — Bring Your Trailer In for an Evaluation Before Ordering
The most common conversion complication is discovering mid-project that the top rear header needs more reinforcement than anticipated — or that the existing trailer frame gauge is thinner than ideal for the hinge mounting loads. These are assessable conditions, but only with the trailer physically present. If local conversion coordination is available near Damascus, OR through GutterAll, the evaluation visit identifies these requirements before any work begins, so the project scope and budget are defined upfront. For contractors ordering the kit to supply their own fabricator, provide photos of the trailer interior, the rear header, and the existing hinge assembly when reaching out to confirm strut specification compatibility.
Frequently Asked Questions
Is this a complete trailer door conversion kit?
No. This listing is for the heavy-duty gas strut kit only. The kit includes two matched gas struts, end fittings, mounting brackets, and fitment guidance. The hinge, welding, structural reinforcement, ramp-assist hardware removal, and all installation labor are not included and must be performed by a qualified trailer fabricator.
Is the hinge included in the kit?
No. The hinge is not included. A lift-up door conversion requires a properly rated top-mounted structural hinge to be sourced, positioned, and professionally installed. The original bottom-mounted ramp hinge must typically be removed as part of the conversion. Fabricator selects and sources the appropriate hinge for the specific trailer.
Is this kit compatible with any enclosed trailer?
Compatibility depends on the specific trailer's door weight, frame construction, rear header strength, existing hinge system, and available mounting geometry. This is not a universal-fit kit. A qualified trailer fabricator must assess the specific trailer before installation to confirm compatibility and identify any structural reinforcement requirements.
Will this protect my crew from rain during gutter production?
The raised door provides partial overhead protection from light rain and reduces direct sun exposure over the rear work area. It is not a fully enclosed or weatherproof shelter. In heavy rain, wind-driven rain, or strong wind conditions, additional protection would be needed. The cover benefit is meaningful for light and intermittent weather, not severe conditions.
What is the return policy for this kit?
Contact GutterAll at sales@gutterall.com or (503) 850-6784 for return policy details before ordering. Confirm strut specifications and compatibility with your trailer application prior to purchase. Returns on special-order or custom-specified items may be subject to different terms.
What shipping and pickup options are available?
The gas strut kit is available for in-store pickup at 19759 SE Sunnyside Rd, Damascus, OR 97089 Monday through Friday 7am to 4pm and Saturday 8am to 12pm PST, local delivery for qualifying orders, and standard shipping. Start a chat or call (503) 850-6784 to arrange your preferred fulfillment method.
Safety Notice — Gas Struts and Trailer Door Conversions
- Never weld, drill, cut, heat, bend, compress by force, or otherwise modify gas struts
- Do not use damaged, bent, dented, corroded, or leaking gas struts
- Do not rely on gas struts as the only fail-safe support for a large or heavy trailer door — a qualified installer should determine whether mechanical safety props or secondary restraints are required for the specific conversion
- Do not stand under an unsupported or unrestrained door during installation or testing
- Keep all personnel clear of the door swing path during installation and test cycles
- Do not operate the raised door in strong, gusty, or sustained high wind conditions
- After conversion, the door should not be used as a walking ramp or vehicle ramp unless the converted door is separately engineered for that specific load use
- Trailer modifications may affect the original trailer manufacturer warranty — check with the trailer manufacturer before proceeding
- The raised door provides shade and partial overhead protection — it is not a fully weatherproof enclosure
- Installation must be performed by a qualified professional with trailer fabrication and welding experience
Order the Strut Kit or Start a Local Conversion Review
Start a chat on the GutterAll website to confirm strut specifications for your specific trailer before ordering, or to ask about local conversion review options. Have your trailer details and photos ready for the fastest response.
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Damascus, OR 97089
Product Summary — Heavy-Duty Lift-Up Trailer Door Gas Strut Conversion Kit
