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Intumescent Letterbox Unit

New product

Intumescent letterbox units with options including a security hood with brush seal. Lockable letter plates sold separately. 

Intumescent letter boxes are mainly used on door of flats, so that if there was a fire in the flat the fire would not break through to the escape route.

Envirograf Product 49

More details

£31.43

- +

 
Product Info

An intumescent fire and smoke protection letter flap system comprising a frame fitted with smoke protection seal and a spring loaded flap, which can be used on either side of a door, and an intumescent liner to fix into the door aperture, only 3.5mm thick.

Kit A - Front frame, flap and intumescent liner

Kit B - Front frame, flap and intumescent liner, plus rear frame and flap

Kit C - Front frame flap and intumescent liner, plus rear security hood

Available colours -  white, brown, brass and stainless steel

Available in two unit sizes -

Hole size 50 x 267mm, Overall size 75 x 315mm

Hole size 69 x 290mm, Overall size 100 x 335mm

Intumescent letter boxes are mainly used on door of flats, so that if there was a fire in the flat the fire would not break through to the escape route.

 
Fire Performance

This product has been included in a fire test employing the general procedures and criteria of BS476

Part 22 1987, built into a composite door, maintaining the integrity of the door for 61 minutes. Also

tested to European Standard EN1634-1 (2000), achieving 68 minutes.

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