
Professional 3x4" Rectangular Aluminum Downspout
Premium Grade Construction | 8ft Shipping Available | 10ft Local Only | 25+ Designer Colors
Trusted by GutterAll.com
Professional Gutter Installation & Supplies Since 2010
19759 SE Sunnyside Rd
Damascus, Oregon 97089
Professional grade in stock
sales@gutterall.com
(503) 496-7017
⚠️ IMPORTANT SHIPPING RESTRICTIONS ⚠️
8ft Sections
✅ NATIONWIDE SHIPPING AVAILABLE
Ships anywhere in the USA
10ft Sections
🚛 LOCAL DELIVERY/PICKUP ONLY
Damascus, OR area only
Choose your length based on location and shipping needs
CONTRACTOR DIRECT PRICING - PROFESSIONAL QUALITY FOR EVERYONE
Save Big with Wholesale Pricing - No Contractor License Required!
CONTACT FOR WHOLESALE PRICING - PROFESSIONAL GRADE QUALITY

Industry Standard Professional Rectangular Downspout System
Transform your gutter system with our Professional 3x4" Rectangular Aluminum Downspout, the industry standard trusted by contractors nationwide. Engineered for superior water management and architectural compatibility, this premium aluminum downspout delivers decades of reliable performance while maintaining the clean, traditional aesthetic that complements any building style.
Classic 3x4" rectangular profile
Premium .019 gauge construction
Perfect architectural matching
8ft shipping, 10ft local delivery
Professional Installation Diagram
Professional installation diagram showing proper bracket placement, elbow positioning, and water flow direction
Available Colors - 25+ Designer Options
Classic Clean
Modern Bold
Traditional Rich
Coastal Classic
Natural Metal
Earth Tone
Natural Blend
Premium Accent
Additional colors available - Contact us for complete color chart and samples
Advanced Technical Specifications & Performance Features
Core Specifications
- Dimensions: 3" x 4" rectangular profile
- Material: Premium .019 gauge aluminum
- Length Options: 8ft (ships nationwide) / 10ft (local only)
- Flow Capacity: 12 square inches cross-section
- Finish: Powder-coated for UV resistance
- Colors: 25+ designer options available
- Warranty: 10-year limited manufacturer warranty
Professional Performance
- Water Management: Superior flow capacity for efficient drainage
- Durability: Professional-grade construction for decades of service
- Weather Resistance: All-weather performance in any climate
- Architectural Compatibility: Classic design complements any style
- Installation: Standard brackets and fittings for easy setup
- Maintenance: Smooth interior prevents debris buildup
- Corrosion Resistance: Aluminum construction never rusts
Professional Applications & System Integration
Residential Applications
- Single and multi-story homes
- Townhouses and condominiums
- Garage and outbuilding drainage
- Deck and patio water management
Perfect for: Homeowners seeking professional-grade quality
Commercial Applications
- Office buildings and retail centers
- Warehouses and industrial facilities
- Schools and institutional buildings
- Multi-unit residential developments
Perfect for: Commercial contractors and developers
System Compatibility
- K-Style gutter systems (with adapters)
- Half-round gutters (with adapters)
- Standard rectangular brackets
- Professional elbow and connector fittings
Perfect for: Integration with existing gutter systems
Contractor Direct Pricing - Professional Quality for Everyone
8ft Sections
Wholesale Pricing Available
Shipping: Nationwide delivery available
Perfect for out-of-area projects
10ft Sections
Best Value - Fewer Seams
Delivery: Local Damascus, OR area only
Maximum efficiency for local projects
Bulk Orders
Volume Discounts Available
Perfect for: Large projects and developments
Custom lengths and colors available
SHIPPING & DELIVERY OPTIONS
8ft Sections - Nationwide Shipping
- Standard Shipping: 5-7 business days
- Expedited Shipping: 2-3 business days
- Freight Options: Available for large orders
- Packaging: Professional protective packaging
- Tracking: Full shipment tracking provided
10ft Sections - Local Only
- Local Pickup: 19759 SE Sunnyside Rd, Damascus, OR
- Local Delivery: Available within 25-mile radius
- Delivery Fee: Based on distance and quantity
- Scheduling: Flexible delivery appointments
- Ready Time: Usually ready in 2-4 days
Professional Installation Guide for 3x4" Rectangular Downspouts
Follow these professional techniques for optimal downspout performance and longevity.
- Plan downspout placement - one downspout per 30-40 feet of gutter
- Install gutter outlet and top elbow connection
- Mark bracket locations every 3 feet along downspout path
- Secure brackets to wall using appropriate fasteners for wall material
- Cut downspout to required length using tin snips or metal saw
- Install downspout sections, securing to brackets as you go
- Add bottom elbow and extension to direct water away from foundation
- Test system with water to ensure proper flow and secure connections
SAFETY & PROFESSIONAL INSTALLATION NOTICE
PROFESSIONAL INSTALLATION STRONGLY RECOMMENDED
Downspout installation requires working at height with proper safety equipment. NEVER work on ladders alone or in windy conditions. Use OSHA-approved fall protection for work 6+ feet high. Professional contractors have proper equipment, insurance, and expertise for safe installation. Follow all local building codes and manufacturer specifications.
PROFESSIONAL RECTANGULAR DOWNSPOUT SYSTEM
Industry standard 3x4" design trusted by contractors nationwide
Premium aluminum construction
25+ designer colors
8ft shipping / 10ft local
Contractor direct pricing
CONTACT FOR WHOLESALE PRICING - PROFESSIONAL PERFORMANCE
Professional Rectangular Downspout FAQ - All Objections Addressed
Why choose rectangular downspouts over round downspouts?
Rectangular downspouts offer superior flow capacity with their 12 square inch cross-section compared to round downspouts. The flat sides provide better structural stability and a more traditional, architectural appearance that complements most building styles. They're also easier to mount flush against walls and integrate seamlessly with K-style gutter systems.
Should I choose 8ft or 10ft sections for my project?
Choose 10ft sections if you're in our local Damascus, OR delivery area - they provide fewer seams for a cleaner appearance and potentially better performance. Choose 8ft sections if you're outside our local area or need nationwide shipping. Both lengths offer identical quality and performance; the choice depends on your location and installation preferences.
Why can't you ship 10ft sections nationwide?
Shipping carriers have length restrictions that make 10ft sections prone to damage during transit. The longer length increases the risk of bending, denting, or crushing during handling and transport. By limiting 10ft sections to local delivery, we ensure you receive perfect, undamaged products. Our 8ft sections ship safely nationwide with minimal risk of damage.
How many downspouts do I need for my building?
Install one downspout for every 30-40 feet of gutter run as a general rule. For areas with heavy rainfall or large roof areas, consider one downspout every 20-30 feet. Also consider roof pitch, gutter capacity, and local building codes. Our team can help calculate the optimal number based on your specific building dimensions and local conditions.
What brackets and accessories do I need?
You'll need 3x4" rectangular downspout brackets (one every 3 feet), appropriate elbows for top and bottom connections, and gutter outlet adapters. We stock all compatible accessories in matching colors. For a typical single-story installation, plan for 3-4 brackets per downspout, plus top and bottom elbows and any necessary extensions.
Can I cut these downspouts to custom lengths?
Yes, aluminum downspouts can be easily cut to custom lengths using tin snips for straight cuts or a metal-cutting saw for longer cuts. Always measure twice and cut once. File any sharp edges smooth after cutting. The powder coating may need touch-up at cut edges - we can provide matching touch-up paint if needed.
How do I choose the right color for my building?
Match your downspouts to either your gutter color, trim color, or siding color for the most cohesive appearance. White and aluminum are versatile choices that work with most color schemes. Dark colors like black or bronze create bold accents, while earth tones blend naturally. We can provide color samples to help you make the perfect choice.
What's the difference between .019 gauge and thinner aluminum?
.019 gauge aluminum is professional-grade thickness that provides superior durability and resistance to denting compared to thinner residential-grade materials. This heavier gauge maintains its shape better over time, resists damage from debris or hail, and provides a more substantial, quality feel. It's the standard used by professional contractors for long-term reliability.
Can I install these myself or do I need a professional?
While the downspouts themselves are designed for straightforward installation, the work involves ladder safety and proper mounting techniques. DIY installation is possible for experienced homeowners with proper safety equipment, but professional installation is recommended for safety, warranty coverage, and optimal performance. Professionals ensure proper pitch, secure mounting, and code compliance.
What's your return policy for custom-ordered colors?
Standard colors are returnable within 30 days in original packaging (15% restocking fee applies). Custom colors are non-returnable due to special ordering. We strongly recommend ordering color samples before placing large orders. For defective products, we provide immediate replacement regardless of color. We work with customers to ensure satisfaction before orders are placed.
How does contractor direct pricing work for homeowners?
We offer the same wholesale pricing to homeowners that professional contractors receive - no contractor license required. This typically saves 30-50% compared to retail pricing. Volume discounts apply to larger orders. Contact us directly for specific pricing on your project quantity and color requirements. Everyone gets professional-grade products at contractor prices.
What's the expected lifespan of these aluminum downspouts?
Professional-grade aluminum downspouts with powder coating typically last 20-30+ years with minimal maintenance. The aluminum won't rust like steel, and the powder coating provides excellent UV and weather protection. Regular cleaning and inspection will maximize lifespan. Our 10-year warranty covers manufacturing defects, but the actual service life far exceeds the warranty period.
GutterAll Professional Performance Guarantee
Industry-standard 3x4" rectangular design with professional-grade construction. These premium aluminum downspouts provide the perfect combination of superior water management, architectural compatibility, and long-term durability. Trusted by contractors nationwide for decades of reliable performance in any climate.
Professional Support & Pricing: (503) 496-7017
19759 SE Sunnyside Rd | Damascus, OR 97089