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✅ IN STOCK • SHIPS NATIONWIDE
3 Sizes: 2x3" • 3x4" • 4x5"
3 Lengths: 15" • 30" • 45"
Rigid aluminum construction • Foundation protection • Available for online order
Professional Aluminum Downspout Extension | Foundation Protection System
Rigid Metal Construction • 2x3" 3x4" 4x5" Sizes • 15" 30" 45" Lengths • Erosion Prevention • Water Drainage
🏡 Foundation Protection
Directs water 4-6 feet away from foundation, preventing basement flooding and structural damage
💪 Rigid Durability
Heavy-duty aluminum construction maintains shape under snow loads and heavy water flow
🌱 Landscape Protection
Prevents erosion and washout of garden beds, maintaining landscaping integrity
📏 COMPLETE SIZE & LENGTH COMPATIBILITY CHART
Choose the perfect extension for your downspout size and distance requirements
2x3" Downspout Size
$59.95
Compatible with: 2x3 inch rectangular downspouts (most common on small homes, garages, sheds)
Available Lengths:
- 15 inches - Short extension for tight spaces
- 30 inches - Standard distance from foundation
- 45 inches - Maximum protection coverage
3x4" Downspout Size ⭐
$59.95
Compatible with: 3x4 inch rectangular downspouts (most popular residential size for 5 inch gutters)
Available Lengths:
- 15 inches - Minimal clearance needs
- 30 inches - Recommended minimum distance
- 45 inches - Premium protection level
4x5" Downspout Size
$69.95
Compatible with: 4x5 inch rectangular downspouts (commercial buildings, 6-7 inch gutter systems)
Available Lengths:
- 15 inches - Close proximity applications
- 30 inches - Standard commercial distance
- 45 inches - Heavy flow protection
Professional Aluminum Downspout Extensions - Ultimate Foundation Protection
Our professional-grade aluminum downspout extensions represent the gold standard in foundation protection and water management for homeowners and contractors nationwide. Unlike flexible vinyl alternatives that crack, kink, and deteriorate under UV exposure, our rigid aluminum construction maintains precise water redirection for decades of reliable performance. Each extension is precision-engineered to match standard downspout sizes (2x3", 3x4", 4x5") and available in three strategic lengths (15", 30", 45") to accommodate any site requirement from tight urban lots to expansive landscaped properties. Available for online order and ships nationwide.
Foundation damage from improper water drainage costs homeowners $12,000-48,000 in repairs nationwide, making downspout extensions one of the most cost-effective preventive investments available. By directing rainwater 4-6 feet away from your foundation, our aluminum extensions prevent basement flooding, foundation cracks, soil erosion, uneven settling, and landscaping washout. The rust-resistant aluminum construction withstands demanding climates across the United States including heavy rainfall, freezing temperatures, snow loads, and extreme seasonal variations without degrading or losing structural integrity. Homeowners from coast to coast trust our extensions for long-term foundation protection.
Professional contractors and DIY homeowners nationwide choose our aluminum downspout extensions for their superior UV resistance, shape retention under snow loads, and precise water flow control. The rigid construction ensures water travels exactly where intended rather than pooling near foundations or eroding landscaping. Order the exact quantity you need online - most homes require 4-8 extensions for complete protection. Installation is straightforward with standard downspout fittings and adapters.
Why Choose Aluminum Downspout Extensions?
🏠 Foundation Damage Prevention
Directs water 4-6 feet from foundation walls, preventing water accumulation that leads to basement seepage, foundation cracks, and structural settling. Protects your home's most critical structural component from moisture damage and saves thousands in potential repair costs.
💪 Superior Aluminum Construction
Heavy-duty rigid aluminum resists rust, corrosion, and UV degradation unlike flexible vinyl alternatives that crack and split. Maintains precise shape and water flow direction even under heavy snow loads and extreme Pacific Northwest weather conditions for decades of reliable performance.
🌱 Landscape & Erosion Protection
Prevents soil erosion and washout of garden beds, mulch, and decorative landscaping. Maintains the integrity of flower beds, walkways, and lawn areas by controlling water flow away from vulnerable landscaping features. Protects your landscaping investment from water damage.
🎯 Precise Water Redirection
Rigid construction ensures water travels exactly where intended without pooling, splashing, or changing direction. Unlike flexible extensions that shift position, aluminum extensions maintain consistent water flow paths for reliable drainage system performance season after season.
⚡ Quick Professional Installation
Installs quickly with standard downspout adapters and fittings - no special tools required. Professional contractors appreciate the time savings compared to custom fabrication. Homeowners find installation straightforward with basic hand tools for immediate foundation protection.
📏 Complete Size Compatibility
Three size options (2x3", 3x4", 4x5") cover all standard residential and commercial downspouts. Three length options (15", 30", 45") accommodate any site requirement from tight urban properties to spacious lots. Perfect-fit guarantee ensures optimal water flow and professional appearance.
Complete Technical Specifications
Frequently Asked Questions
How do I know which size downspout extension I need? ▼
What length extension should I choose - 15", 30", or 45"? ▼
Why choose aluminum extensions instead of flexible vinyl? ▼
Can I connect multiple extensions for longer distances? ▼
How do I install aluminum downspout extensions? ▼
Will aluminum extensions rust in wet climates? ▼
How many extensions do I need for my home? ▼
Do you offer bulk pricing for contractors? ▼
Protect Your Foundation with Aluminum Extensions
Rigid aluminum construction • 3 sizes • 3 lengths • Foundation protection • Ships nationwide
In Stock
Available for
nationwide shipping
Complete Sizing
3 sizes × 3 lengths
9 options available
Need Help?
Live chat available
Expert sizing assistance
Pacific Northwest customers: Professional installation available in OR/WA - contact us via live chat for local installer referrals