GA 3x4" Double A Offset Downspout Extension Professional Grade Aluminum 4" Offset 25+ Colors
GA 3x4" Double A Offset Downspout Extension Professional Grade Aluminum 4" Offset 25+ Colors
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3x4" Double A Offset Downspout Extension
Professional-Grade Corrugated Aluminum | 4" Offset | 3 Colors | Nationwide Shipping
Damascus, OR 97089
Professional Gutter Systems
sales@gutterall.com
Nationwide Shipping Available
3x4" Double A Offset — 13" height, 4" offset distance, corrugated aluminum
Professional Installation Guide & Product Overview
Professional-Grade 3x4" Double A Offset for Enhanced Water Management
Optimize your commercial or residential gutter system with our premium 3x4" Double A Offset Downspout Extension, engineered for superior water flow capacity and professional performance. This heavy-duty 4-inch offset directs water away from foundations and structures. Corrugated aluminum construction provides maximum strength and durability for demanding applications.
Superior water flow for large roof areas
Maximum strength, weather-resistant
Perfect clearance for walls and obstacles
Perfect match for any exterior design
Technical Specifications
Core Specifications
| Dimensions | 3" x 4" rectangular profile |
| Offset Distance | 4 inches horizontal clearance |
| Height | Approximately 13 inches total |
| Material | Corrugated aluminum |
| Style | Double A offset configuration |
| Compatibility | All standard 3x4" downspout systems |
| Brand | GutterAll |
Double A Design Benefits
- Enhanced flow: Superior water capacity vs. round systems
- Professional appearance: Clean, architectural lines
- Structural integrity: Corrugated reinforcement ribs
- Commercial grade: Meets demanding applications
- Easy installation: Standard connection methods
- Durability: Long-term weather resistance
- Maintenance-free: No rust or corrosion
Available Colors
Standard Colors (In Stock)
30 Deg. White
Musket Brown
Black
- Most popular residential choices
- UV-stable coating technology
- Available for immediate shipping
Extended Color Options
- 25+ professional finish options total
- Custom color matching available
- Commercial color coordination
- Architectural specification matching
- Regional color preferences
- Contact us for complete color chart
Extended colors may require additional lead time. Call (503) 496-7017 for availability.
Professional Applications
Commercial Applications
- Large commercial buildings
- Industrial facilities and warehouses
- Multi-unit residential properties
- Institutional and government buildings
- Retail and office complexes
- Educational facilities
High-Capacity Residential
- Large roof areas requiring enhanced drainage
- Heavy rainfall regions
- Premium homes with architectural requirements
- Extended drainage system needs
- Foundation protection priorities
- Landscape preservation requirements
Installation Scenarios
- Wall clearance requirements
- Obstacle navigation around structures
- Complex routing and water direction
- Professional drainage system integration
- Foundation protection installations
- Landscape and hardscape coordination
Pricing by Color
Contractor direct pricing — same rate for all colors. Select your color from the variant picker above.
| Color / Variant | SKU | Price | Availability |
|---|---|---|---|
| 30 Deg. White | 4353261001 | $19.99 | In Stock |
| Musket Brown | 4353261002 | $19.99 | In Stock |
| Black | 4353261003 | $19.99 | In Stock |
Professional Installation Guide
Follow these steps for optimal 3x4" Double A offset performance and water management.
- Verify proper size compatibility with your existing 3x4" downspout system
- Confirm the correct offset alignment for wall clearance and water direction
- Secure all connection points with appropriate fasteners and sealants
- Confirm proper water flow direction away from the foundation
- Test the system with water flow to verify drainage effectiveness
- Inspect the installation for proper alignment and secure connections
- Verify compliance with local building codes and manufacturer specifications
Safety Notice: Professional installation is strongly recommended. Downspout work requires working at height with proper fall protection. Never work on ladders or roofs without OSHA-approved safety equipment. Follow all manufacturer specifications and local building codes.
Why GutterAll
Professional gutter systems since 2010
Wholesale rates for everyone — no license required
Hassle-free returns on all products
Expert consultation for your project
Customer Reviews — 4.8/5 (31 reviews)
Perfect fit for our commercial rerouting project. The corrugated construction is noticeably more rigid than competitors, and the Musket Brown color matched our existing gutter system exactly.
Used 8 of these on a large warehouse installation. All three colors made it easy to match different sections. Fast shipping from Damascus, arrived well-packaged.
Good quality aluminum and the 4-inch offset is exactly what I needed to clear the brick ledge. Straightforward installation with standard crimp tools. Would buy again.
Frequently Asked Questions
Why choose 3x4" over standard round downspouts?
3x4" rectangular downspouts provide significantly higher water capacity than round systems, making them ideal for large roof areas, commercial applications, and heavy rainfall regions. The rectangular profile offers superior flow characteristics, professional appearance, and enhanced structural integrity.
What does "Double A Offset" mean and why is it important?
Double A Offset refers to the specific configuration that creates a 4-inch horizontal offset while maintaining proper water flow. This design allows downspouts to navigate around obstacles, clear walls, and direct water to desired locations while maintaining optimal drainage performance.
Is the corrugated surface better than smooth aluminum?
Yes. The corrugations act as reinforcement ribs, preventing denting and maintaining shape under stress. This design also provides better water flow characteristics and professional appearance while requiring minimal maintenance.
How do I choose the right color for my project?
Consider your existing gutter system, roof color, and exterior trim. White (30 Deg.) is most popular for residential applications, Musket Brown complements earth-tone exteriors, and Black provides modern contrast. We offer 25+ colors — contact us with photos of your exterior for personalized recommendations.
Can I install this myself or do I need a professional?
Professional installation is strongly recommended. Downspout work requires working at height, proper water flow calculations, and knowledge of building codes. Improper installation can cause water damage, foundation issues, and safety hazards.
How many offset pieces do I need?
Most installations require one offset per downspout location where clearance is needed. Count the number of downspouts requiring wall clearance or obstacle navigation. Our technical team can review your project plans and provide quantity recommendations.
Will this work with my existing 3x4" downspout system?
Yes. Our 3x4" Double A Offset is designed to integrate seamlessly with all standard 3x4" rectangular downspout systems. Connections are standardized across the industry, ensuring proper fit and performance.
How long will this aluminum offset last?
Professional-grade corrugated aluminum with UV-stable coating will not rust or corrode. With proper installation, expect 20–30+ years of reliable, maintenance-free service.
Related Products
Standard rectangular downspout sections
B-style and A-style elbow configurations
Wall-mount brackets for 3x4" systems
Rectangular outlet drops for 3x4" systems
19759 SE Sunnyside Rd
Damascus, OR 97089
United States
Phone: (503) 496-7017
Email: sales@gutterall.com
Website: gutterall.com
Mon–Fri: 7:00 AM – 5:00 PM
Saturday: 8:00 AM – 2:00 PM
Sunday: Closed
Order online 24/7
Local pickup available
Nationwide shipping
30-day returns
GutterAll — Professional Gutter Systems | Damascus, OR | gutterall.com | (503) 496-7017
