Heavy Duty Fire Rated All Stainless Steel 12 Inch Letterboxes

Features of the heavy duty fire rated all stainless steel 12 inch letterboxes are:

• Made from 316 grade stainless steel
• 1 hour fire rated - for FD30 and FD60 fire doors 
• Special intumescent lining expands to 50 times its size, sealing any gaps in the door hardware
• Heat absorbing washers act as a heat sink to keep the metal screws away from the plastic and potentially melting it
• Comes with a lifetime coating guarantee anywhere in the country
• 180 degree opening flap means the flap will not snap off if opened too far - the problem with all 90 degree opening letterboxes
• Outwards facing brushes create an Anti-Vandal feature as it prevents people from placing unwanted items in to the cavity
• Outwards facing brushes also means better draught proofing and makes it easier to post letters through
• Matt finished plastic frame conceals any scratches that may be caused by screwdrivers during installation
• Blind bolts to the exterior of the letterbox prevents the outer frame being unscrewed from the door externally
• An internal water seal prevents water getting in to the door or panel, and stops letters getting wet
• Ultra-flexible springs can withstand the flap opening thousands of times without breaking
• Revolutionary self-aligning assembly feature
• Tested and conforms to many testing standards including BS EN1303:2005

Guarantee: