Intumescent Letter Boxes

Intumescent Letter Boxes

Intumescent Letter Boxes from Passive Fire Products. In stock. Next Day Delivery. Fire rated letter box units are fitted with an intumescent liner and are suitable for installing into fire rated doors without compromising the door's integrity. These intumescent letter plates are fire rated for 30 minutes, available in 4 different finishes and 2 sizes. Passive Fire Products range of Fire Rated Meter Box Units provide you with that extra bit of protection against potential fires. Our fire door hardware range consists of high quality and reliable items.