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Mastic Smooth Round Offset – 4" .024 Aluminum Downspout Offset, 2' or 4'
Regular price $27.25Orders start at $399 — combine any items to reach the minimum. Learn more
Mastic Smooth Round Offset – 4" .024 Aluminum Downspout Offset, 2' or 4'
The Mastic Smooth Round Offset is an extruded aluminum downspout fitting made to shift a round 4" downspout run sideways where walls or obstructions require it. It is offered in 2' and 4' lengths in .024 aluminum, sold as a single piece. Choose Dark Bronze, 33 Black or White to match Mastic round downspout components.
Key Features:
- Durable aluminum: Made with durable, high-quality aluminum that will not rust and is easy to maintain.
- Dent resistant: Extra-thick design resists dents from everyday wear and tear.
- Two-coat finish: Revolutionary two-coat finish combines a rust-inhibiting primer and low-mar topcoat on both sides of the coil.
- Offset lengths: Available in 2' and 4' offset lengths to route around obstacles.
- 4" .024 gauge: Made in 4" diameter, .024 aluminum for round downspout systems.
- Color choices: Offered in White, 33 Black and Dark Bronze to complement the home exterior.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Mastic |
| Sell unit | 1 piece |
| Product line | Mastic / Ply Gem Gutter Systems – Gutter Fittings |
| Available colors | Dark Bronze, White, 33 Black (3 colors) |
| Available sizes | 4" .024, 2' offset; 4" .024, 4' offset |
| Material | High-quality aluminum |
| Gauge | .024 in. |
| Diameter | 4 in. |
| Length | 2 ft. or 4 ft. offset |
| Finish / texture | Two-coat finish: rust-inhibiting primer plus low-mar topcoat on both sides |
| Rust resistance | Will not rust |
| Intended use | Offsetting round downspout runs away from the wall or around obstructions |
Coverage & How Much You Need:
Each piece provides one offset of 2 ft. or 4 ft. depending on the variant selected; order the length that matches the lateral shift needed for the downspout run.
Fit and Compatibility:
Designed for Mastic/Ply Gem round 4" gutter and downspout systems; pair with Mastic smooth round elbows and downspouts. Sold as a single piece per unit.
Frequently Asked Questions (FAQ):
Q: What sizes are available?
A: The offset is made in 4" diameter .024 aluminum in 2' and 4' offset lengths.
Q: What colors can I choose?
A: Current variants are Dark Bronze, White and 33 Black.
Q: What is it made of?
A: Durable high-quality aluminum that will not rust, with a two-coat primer-and-topcoat finish on both sides.
Q: How many do I need?
A: One piece per offset in the downspout run; order additional pieces for runs with multiple shifts.
Q: Is it easy to maintain?
A: Yes, the aluminum construction and low-mar topcoat are designed for durability and easy maintenance.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Choose the 2' offset for modest wall shifts and the 4' version where the run must travel farther out from the building. Match the .024 gauge to your existing round downspout so seams and sealant joints align cleanly. Install offsets between elbow sections and seal slip joints for a watertight assembly.
Work from a stable ladder and wear gloves when handling cut aluminum edges; secure all joints before leaving the run unsupported.
Add the Mastic Smooth Round Offset to your round downspout run for a clean, rust-free directional change.
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