Amerimax 5404900042 Aluminum Door Cap 42 Inch

Product Description

The AMERIMAX 5404900042 is a 42-inch aluminum door and window frame cap designed to protect door and window frames from moisture intrusion. Fabricated from rust-free aluminum, this trim piece installs over the top edge of a door or window frame, creating a weather-resistant barrier that helps prevent water damage to underlying wood and framing materials. The aluminum construction accepts paint, allowing the cap to be finished to match an existing exterior color scheme. It is typically installed by siding contractors, carpenters, and general contractors during new construction or siding replacement projects.

This door cap is suited for residential exterior applications where standard door and window frames require edge protection against rain, condensation, and general weather exposure. It is installed under siding using aluminum nails, integrating cleanly with the existing exterior envelope. The 42-inch length accommodates most standard residential door and window openings. This product is sold individually and is well-suited for both new installs and remodel work where moisture management at door and window openings is a priority.

Key Features

• Rust-free aluminum construction resists corrosion in exterior applications
• 42-inch length fits most standard residential door and window frame widths
• Paintable surface allows matching to existing exterior color schemes
• Installs under siding using aluminum nails for a clean, concealed fit
• Lightweight profile simplifies handling and cutting on the job site

Compatibility

Compatible with most standard-size residential windows and doors where an aluminum frame cap or drip edge trim is required at the head of the opening.

Installation Notes

Installation is typically performed by siding contractors or carpenters during exterior cladding work. Secure the cap over the door or window head frame using aluminum nails before applying the overlapping siding course. Use aluminum fasteners exclusively to prevent galvanic corrosion between dissimilar metals. Trim to length with aviation snips or a metal-cutting blade as needed to fit the opening.