7ft Sections: Ships Nationwide | 10ft Sections: Damascus Pickup Only | 25+ Colors | Contractor Bulk Boxes Available
Important Shipping Information — Read Before Ordering
7-Foot Sections — Ships Nationwide
- All online orders ship as 7-foot (84-inch) sections
- Maximum shippable length via FedEx and UPS
- Available to all 50 states
- Ideal for single-story installations
10-Foot Sections — Damascus Pickup Only
- Standard 10-foot (120-inch) contractor sections
- Cannot be shipped — carrier length restrictions
- Ideal for two-story work, fewer seams
- Same-day availability for local crews
Bulk Boxes (10-Packs) — Damascus Pickup Only
- Contractor-grade boxes of 10 sections
- 10-foot lengths only, cannot be shipped
- Volume pricing for professional installers
- Email for color and size availability
Damascus Pickup Location: GutterAll — 19759 SE Sunnyside Rd, Damascus, OR 97089 | Mon-Fri 7am-4pm, Sat 9am-2pm PST
Professional Aluminum Downspouts — Rectangular K-Style Leaders for Residential and Commercial Gutter Systems
Downspouts — also called leaders, downpipes, drain pipes, and conductor pipes in the trade — are the vertical drainage components that carry collected rainwater from the gutter trough down to ground level, directing it safely away from building foundations, basements, and crawl spaces. Without correctly sized downspouts matched to the gutter system, even a properly installed K-style gutter cannot move water fast enough to prevent overflow during heavy rain events. GutterAll stocks aluminum rectangular downspouts in both standard sizes — 2x3 inch for 5-inch K-style gutter systems and 3x4 inch for 6-inch K-style gutter systems — in 7-foot sections that ship nationwide and 10-foot sections available for local pickup at the Damascus, Oregon location.
All downspouts are aluminum with a factory powder-coated finish available in 25+ colors for color-matched installations. Aluminum construction delivers 20 to 40 years of service life with no rusting, no painting, and minimal maintenance — the correct material specification for professional gutter installation work in the Pacific Northwest and nationwide.
Ships Nationwide
7ft sections ship via FedEx and UPS to all 50 states — select size and color at checkout
Damascus Pickup
10ft sections and bulk contractor boxes available same-day at 19759 SE Sunnyside Rd
25+ Colors
Factory powder-coated finishes for color-matched gutter system installations — White, Bronze, Black, Clay, and more
Bulk Contractor Pricing
10-pack contractor boxes at volume pricing — Damascus pickup only, contact sales@gutterall.com
2x3 vs. 3x4 Rectangular Aluminum Downspouts — Technical Differences
2x3 Inch Rectangular Aluminum Downspout
The 2x3 inch rectangular downspout is the industry standard for residential gutter installations with 5-inch K-style gutters. The 2-inch by 3-inch cross-section provides 6 square inches of internal flow area, correctly matched to the outlet size of a standard 5-inch K-style gutter for drainage areas up to 600 square feet per downspout. The streamlined rectangular profile sits flush against the building exterior and presents a clean, low-profile appearance that complements the gutter system without dominating the facade. GutterAll supplies 2x3 downspouts in 7-foot sections for nationwide shipping and 10-foot sections for Damascus pickup in all available powder-coated colors.
3x4 Inch Rectangular Aluminum Downspout
The 3x4 inch rectangular downspout delivers the increased flow capacity required by 6-inch K-style gutter systems, large-roof drainage areas, and commercial applications. The 3-inch by 4-inch cross-section provides 12 square inches of internal flow area — double the capacity of the 2x3 — correctly matched to the outlet size of a 6-inch K-style gutter for drainage areas between 600 and 1,000 square feet per downspout. Steep-pitch roof geometries and high-rainfall environments increase runoff velocity and volume; the 3x4 profile handles peak flow rates that would overflow a 2x3 downspout during heavy precipitation events. Available in 7-foot sections for nationwide shipping and 10-foot sections for Damascus pickup.
7-Foot Sections — Nationwide Shipping
Seven-foot downspout sections are the maximum length that FedEx, UPS, and standard freight carriers will accept. All online orders automatically ship in 7-foot sections. While 10-foot sections minimize field joints per run, 7-foot sections offer their own practical advantages for installation contractors:
-
Ladder Handling: Shorter sections are easier to manage solo on ladders, reducing the two-person requirement on single-story installations
-
Configuration Flexibility: 7-foot sections can be combined and trimmed to create non-standard heights without excessive waste
-
Vehicle Transport: Fits in standard pickup beds and cargo vans without the overhang that 10-foot sections require
-
Nationwide Availability: Ships to all 50 states — the correct choice for contractors outside the greater Damascus and Portland metro area
Section Quantity Estimating — 7-Foot Sections
Single-Story — 8 to 10 ft Eave Height
Typically 1 to 2 sections per downspout run. Example: 4 downspout locations x 2 sections each = 8 sections total. Add extra for elbows, offsets, and extensions.
Two-Story — 16 to 20 ft Eave Height
Typically 3 sections per downspout run. Example: 6 downspout locations x 3 sections each = 18 sections total. Add extra sections for ground-level extensions and offset routing.
Downspout Placement and Quantity — Contractor Guidelines
Residential Standard: One downspout per 30 to 40 linear feet of gutter run
High-Rainfall Regions: One downspout per 20 to 30 linear feet for maximum performance during heavy precipitation events
Commercial Applications: Engineered calculations based on roof square footage, gutter size, and regional rainfall intensity — contact GutterAll for commercial project support
Typical Single-Story Home: 4 to 6 downspouts
Typical Two-Story Home: 6 to 10 downspouts
Complex Rooflines: Calculate per individual gutter run length and roof drainage area using the area and gutter size to determine correct downspout size and spacing
Frequently Asked Questions
What is the difference between 2x3 and 3x4 downspouts?
The 2x3 downspout has 6 square inches of internal flow area and is designed for 5-inch K-style gutters draining roof areas up to 600 square feet per downspout. The 3x4 downspout has 12 square inches of flow area — double the capacity — and is designed for 6-inch K-style gutters draining 600 to 1,000 square feet per downspout. The correct size is determined by the gutter size being installed and the roof drainage area each downspout must serve.
Can 10-foot sections be shipped to my location?
No. Ten-foot downspout sections exceed the maximum length accepted by FedEx, UPS, and standard freight carriers. All online orders automatically ship as 7-foot sections, which are the maximum shippable length. Ten-foot sections and bulk contractor boxes are available exclusively for in-person pickup at GutterAll's Damascus, OR location at 19759 SE Sunnyside Rd.
How many downspouts does a typical home require?
Standard residential practice is one downspout per 30 to 40 linear feet of gutter run. In high-rainfall regions, one per 20 to 30 feet is recommended for optimal drainage during peak storm events. A typical single-story home requires 4 to 6 downspouts; a two-story home typically requires 6 to 10 downspouts depending on roofline complexity, gutter run lengths, and local rainfall intensity.
How do 7-foot sections connect together on two-story installations?
Sections are joined by overlapping the upper section into the lower by 2 to 3 inches, applying a continuous bead of gutter sealant to the inside of the lower section before inserting the upper, then fastening through both walls with 3 to 4 aluminum screws or pop rivets. A correctly assembled joint is watertight, structurally sound, and performs equivalently to a single-piece section through repeated thermal expansion cycles.
What colors are available and how do I match existing gutters?
GutterAll stocks aluminum downspouts in 25+ factory powder-coated colors including White, Bronze, Black, Clay, Musket Brown, Royal Brown, Grecian Green, Colonial Red, and additional architectural finishes. For color-matching to existing gutter systems, contractors in the Portland metro area can bring a physical sample to the Damascus showroom for comparison against in-stock sections. For online orders, email sales@gutterall.com with the existing gutter manufacturer and color name for guidance on the closest available match.
How long do aluminum downspouts last?
Aluminum downspouts with factory powder-coated finishes deliver 20 to 40 years of service life under normal installation and maintenance conditions. Unlike galvanized steel, aluminum does not rust — it forms a stable oxide layer that resists further corrosion without any treatment. The powder-coated finish resists UV fading, chalking, and surface degradation. Correctly installed and sealed aluminum downspouts typically outlast the roof systems they drain.
What tools are needed to install aluminum downspouts?
Basic installation requires a tape measure, tin snips or a metal-cutting blade for trimming sections to length, a drill with metal-rated bits, aluminum screws or pop rivets and a rivet gun, gutter sealant, a caulk gun, and a ladder appropriate for the installation height. Professional gutter installers also use crimping tools for clean section joins and speed squares for layout. Most professional installations do not require specialized tooling beyond standard gutter and sheet metal trade tools.
Is contractor bulk pricing available?
Yes. Contractor pricing is available on bulk orders and 10-pack boxes of 10-foot sections for local pickup at the Damascus location. Contact sales@gutterall.com to discuss volume pricing for commercial projects, multi-unit residential work, or ongoing supply arrangements. GutterAll's primary customer base is professional gutter installation and cleaning contractors, and contractor pricing is a standard part of the ordering process for qualifying volume orders.
Order Aluminum Downspouts — Ships from Damascus, OR
Select size and color from the products below and add to cart. 7-foot sections ship nationwide. Email for 10-foot sections, bulk contractor boxes, and volume pricing.
sales@gutterall.com
19759 SE Sunnyside Rd, Damascus, OR 97089 | Mon-Fri 7am-4pm, Sat 9am-2pm PST | (503) 850-6784
