The Standard Letterbox – With Flap is a durable internal letterbox surround designed to provide a neat, professional finish to the inside of wooden front doors. Featuring a textured-effect plastic surround, an integrated internal flap, and a black brush seal, it helps reduce draughts, improve insulation, and conceal the internal letterbox opening while enhancing the appearance of your door.

Manufactured from high-quality, hard-wearing plastic, this internal letterbox is easy to install using the supplied fixings, making it ideal for both replacement and new door installations. The internal flap provides an additional barrier against cold air, dust, insects, and unwanted draughts, while the brush seal helps minimise heat loss and improves overall energy efficiency.

Designed to fit a 275mm x 40mm letterbox aperture, the Standard Letterbox – With Flap is suitable for a wide range of residential front doors. It offers a durable, low-maintenance solution for improving both the appearance and performance of your letterbox while delivering a clean, attractive finish that complements a variety of door styles.