"Refresh your door with the UAP Petit Master 10"" White Aluminium Draught Proof Letterbox, designed for smooth operation, reliable performance and a clean modern finish. Suitable for uPVC, composite and wooden doors 20 to 40mm thick, it provides an ideal replacement for standard openings and delivers improved insulation, durability and ease of use.Key Features• Internal & External Flaps: Dual-flap design improves security and provides smooth letter handling on both sides of the door.• Durable Aluminium Construction: Strong, corrosion-resistant aluminium flaps paired with an anti-scratch frame for long-lasting performance.• Patented Anti-Snap Design: Flaps open to 180° for easy access without risk of snapping or damage.• Adjustable 40–80mm Fit: Telescopic structure allows secure installation on uPVC, composite, and wooden doors.• Fast, Accurate Installation: Single fixing screw on each side auto-aligns with the screw boss for a quick, secure fit.• Fully tested to BS EN 13724 and cycle-tested over 100,000 times, this letterplate delivers dependable quality and smooth operation for years to come.• Distance Between Screw Holes: 226 mm• Letterplate Length: 250 mm• Letterplate Height: 65 mm• Letterplate Width: 20-40 mm."