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Mastic Aluminum J-Style Window Trim, 3/4 in. x 12 ft., White Finish
Regular price $11.90Orders start at $399 — combine any items to reach the minimum. Learn more
Mastic Aluminum J-Style Window Trim, 3/4 in. x 12 ft., White Finish
This Mastic aluminum J-style window trim frames, protects and adds a clean finishing touch to windows, doors and corners. Each 3/4 in. x 12 ft. piece is rust-free aluminum with a white finish that is virtually maintenance free. It pairs with Mastic siding and exterior trim for a color-matched installation.
Key Features:
- Rust-Free Aluminum: Rust-free aluminum construction delivers long-term durability in exterior exposures.
- Low Maintenance: Requires virtually no maintenance once installed.
- Color-Matched System: Perfectly matched to Mastic siding and exterior trim products.
- Finished Look: Frames, protects and adds a finishing touch to windows, doors and corners.
- 12 Ft. Length: Each 12 ft. piece covers long runs with fewer joints.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Mastic |
| Sell unit | 1 piece, 3/4 in. x 12 ft. |
| Product line | Mastic Aluminum Window Trim |
| Product type | J-style trim channel |
| Material | Aluminum |
| Color / finish | White |
| Available colors | ['White'] |
| Available sizes | ['3/4" x 12\''] |
| Dimensions | 3/4 in. profile x 12 ft. length |
| Intended use | Framing and protecting windows, doors and corners |
| Assembly | Field cut to length |
Coverage & How Much You Need:
One 12 ft. piece trims roughly 12 linear feet of a window, door or corner edge; measure each opening's perimeter and divide by 12 ft. to size the job.
Fit and Compatibility:
Designed to pair with Mastic siding and exterior trim products for a matched finish. Fasteners and flashing are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in the sell unit?
A: One white aluminum J-style trim piece, 3/4 in. x 12 ft.
Q: How do I size the trim for a window?
A: Measure the perimeter of the opening and divide by 12 ft. to determine how many pieces you need.
Q: Will it rust?
A: No, it is made of rust-free aluminum designed for exterior durability.
Q: Does it need painting?
A: No, it requires virtually no maintenance and comes finished in white.
Q: Can it be cut on site?
A: Yes, aluminum trim of this type can be field cut to length with appropriate tin snips or shears.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
J-channel is the workhorse of exterior trim: use it to terminate siding at windows, doors and corners while hiding cut edges. Order extra pieces for offcuts, and choose a Mastic color-matched trim so joints between siding and trim stay visually seamless.
Cut aluminum edges are sharp; wear gloves and eye protection when trimming and fastening.
Order Mastic aluminum J-style window trim for a rust-free, color-matched finish on your next siding job.
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