Stylish ABS-framed, telescopic letterbox, with metal flaps and fitted with a high performance intumescent liner. In the event of fire the intumescent liner expands rapidly and seals-off the letterbox opening, preventing the spread of fire and smoke whilst maintaining the integrity of the fire door assembly. Adjustable telescopic sleeve to suit 40-80mm. Fire Rated to 30mins Steel Construction For Internal & External Use Suitable for FD30 Fire Doors Integral Sound-Dampening Fully Sealed Backplate

Price: £32.99 from Screwfix

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Stockist	Product Name	Price
Screwfix	Firestop Fire Rated Intumescent Letterbox Polished Silver 306mm x 70mm	£32.99	Temporary unavailable