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Mastic Square Corrugated Downspout 3 in. x 4 in. x 10 ft. .024 White
Regular price $760.00Mastic Square Corrugated Downspout 3 in. x 4 in. x 10 ft. .024 White
This Mastic square corrugated downspout carries rainwater from 3 in. x 4 in. gutter outlets to grade, in 10 ft. lengths of .024 aluminum finished in White. Sold as a carton unit. Pair with matching Mastic 3 x 4 gutter system, elbows and downspout bands.
Key Features:
- 3 x 4 square size: Standard 3 in. x 4 in. profile handles higher water volume than smaller downspouts.
- Corrugated sides: Corrugation adds rigidity and resists denting over long runs.
- 10 ft. lengths: 10 ft. pieces reduce joints from gutter to grade on most walls.
- .024 aluminum: .024-gauge aluminum is lightweight and rust resistant.
- White finish: White finish suits common trim and gutter color schemes.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Mastic |
| Sell unit | 1 carton (CTN) |
| Product line | Mastic Gutter Systems |
| Available colors | ['White'] |
| Available sizes | ['3 in. x 4 in. x 10 ft. .024'] |
| Dimensions | 3 in. x 4 in. x 10 ft. |
| Material | Aluminum |
| Gauge | .024 |
| Finish / texture | White |
| Intended use | Vertical rainwater leader from 3x4 gutter outlets to grade |
Coverage & How Much You Need:
Each 10 ft. downspout serves one vertical drop from gutter outlet toward grade. Measure each drop from gutter to grade or intermediate discharge, add elbows and offset as needed, and divide total length by 10 ft.
Fit and Compatibility:
Fits 3 in. x 4 in. gutter outlets and Mastic/Ply Gem 3 x 4 gutter systems; matching elbows, drop outlets and fastening bands are sold separately.
Frequently Asked Questions (FAQ):
Q: What size is this downspout?
A: It is 3 in. x 4 in. square corrugated, 10 ft. long, in .024 aluminum.
Q: What is included in one order?
A: One carton sell unit of the White 3 in. x 4 in. x 10 ft. downspout.
Q: How many pieces per drop?
A: Most single-story drops need one 10 ft. piece plus elbows; measure each drop and divide by 10 ft.
Q: Does it need elbows?
A: Yes, elbows and offsets to route around architectural features are sold separately.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
A 3 x 4 downspout is the right choice when the roof area served exceeds what a 2 x 3 leader can handle; confirm your outlet size before ordering. Keep corrugation oriented correctly when joining, and secure the run with straps per local code rather than relying on friction fits. Extend discharge away from the foundation with splash blocks or drains.
Downspout installation is ladder work at the eave; follow ladder safety practices and check local codes for discharge location.
Order the Mastic 3 in. x 4 in. square corrugated downspout in White for reliable roof drainage.
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