"Complete your door with the UAP Doormaster 12"" Gold Finish Draught Proof Letterbox, designed for reliable performance and secure everyday use. Suitable for uPVC, composite and wooden doors 40 to 80mm thick, it features internal and external flaps that improve insulation and support smooth letter handling.The aluminium flaps open fully to 180 degrees and are engineered to resist snapping, while the anti scratch frame helps maintain a clean appearance. The telescopic design offers a precise fit across a wide range of door thicknesses, and installation is quick with the single screw fixing system. Tested to BS EN 13724, the Doormaster range includes high strength components designed to withstand more than 100,000 opening and closing cycles, providing a durable and dependable replacement for modern homes.• Distance Between Screw Holes: 272 mm• Letterplate Length: 300 mm• Letterplate Height: 74 mm• Letterplate Width: 40-80 mm• Cavity Hole Size: 257 mm × 42 mm."