AFIT Polished Silver 60 Minute Intumescent ABS Frame Telescopic Letterbox 300mm

Introducing the 30 minute Intumescent ABS Frame Telescopic Letterbox, the best in fire protection door hardware. Tested for 30 minute fire doors. Perfect for multi-residential buildings, the intumescent strip is designed to expand when exposed to extreme heat stopping fire being able to travel past the door. This model also comes equipped with an internal draught excluder and external weatherseal for increased protection from the elements.