Mirror Polished Chrome Finnish Made From Stainless Steel Letterbox Extreme High Quality!
The Framemaster letterplate is lined with special intumescent material which expands to 50 times its size, blocking the hole in the cavity and preventing smoke coming through the cavity.The Framemaster letterplate is compliant to BS EN1634-3:2004 smoke leakage regulations.
60 minutes fire rated
Uses special heat absorbers to stop hot screws melting the plastic
Intumescent activated at 5 degrees lower than most in the market
Designed for 40-80mm thick composite and wooden doors
180 degree opening flap means the flap will not snap off when opened too far
Manufactured from grade 316 stainless steel
LIFETIME coating guarantee
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