Envirograf Intumescent Letter Box Unit

Availability: In Stock


An intumescent letter box to provide fire, smoke, weather and draught protection.


A stylish intumescent Anodised Aluminium Letterbox provides the finishing touch to your fire doors. The adjustable telescopic sleeve which allows for easy fitting to 44mm and 54mm fire doors, extensively tested to current fire, smoke, and acoustic standards and comes in a range of colours.

Aperture Size: 250mm x 35mm.

External Size: 300mm x 67mm.


Provides up to 68 minutes protection- Can be installed on either side of a wide range of doors.

A security hood or lockable letter plate can be supplied as internal alternatives to fit to the door.

Economy letter box is ready to install in mail apertures, replacing the existing standard letter flap.


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