For composite and upvc doors we would recommend using From the Anvil's door letterbox which is supplied as a full kit and contains a tunnel and brushes to reduce drafts and insulate the door. The sleeve inside the letterbox also protects the door from moisture and masks the aperture cutting.
From the Anvil's black finish is baked in a high-temperature oven giving it a durable corrosion resistant finish which is salt tested to 480 hours.
Designed to match their other black front door furniture to create a feature entrance door.
Maximum door thickness: 72mm.
Minimum door thickness: 42mm.
Supplied with matching bolt through fixings.
- Overall Size: 315mm x 92mm
- Opening Size: 249mm x 41mm
- Fixing Centres: 283mm