12" Silver Aluminium Letterbox, Draught Proof Postal Letter Box, Adjustable Depth, Fit for 40-60mm Thickness Wooden, Composite,UPVC, Internal and External Doors

• Precision Fit for 40-60mm Doors: Designed exclusively for 40-60mm thick doors. Features adjustable sleeves with 275mm screw hole spacing (305x70mm cover). Ensures seamless replacement for standard UK letterboxes.
• Double-Layer Alloy Dust Defence: Twin aluminium flaps block dust, insects and drafts. Outer flap resists weather, inner brush seals gaps. Ideal for homes and offices seeking cleaner interiors.
• 180° Snap-Proof Flap System: Hinge design allows full 180° opening for both flaps. Prevents breakage when handling bulky mail. Compatible with UPVC, composite and timber doors.
• Tool-Free 5-Minute Installation: Includes all screws and seals. Slide adjustable sleeves into door, tighten screws – no drilling needed. Fits midrail doors instantly.
• Heavy-Duty Aluminium Build: Aircraft-grade alloy flaps + scratch-resistant frame. Withstands daily use and UK weather. Long-term draught proofing solution.

Material: Aluminium Colour: Silver Fit for: 40-60mm Thickness Door Applicable scenes: Wooden doors: Fits all interior and exterior wooden doors. UPVC doors: Works perfectly with UPVC door bodies. Composite doors: Easily fits composite doors. All door types: Reliable for both internal and external doors.