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  Home > Fire Door Protection > Intumescent Letterbox Liner

Intumescent Letterbox Liner  

Intumescent Letterbox Liner

Tested to BS476: Part 22: 1987

30 min or 60 min types

Choice of colours and letterplates

Self adhesive backed

Easy to install

Maintenance free

Suits new or retro-fit

NHBC Type Approval.


Consists of a high performance, self adhesive backed, PVC laminated intumescent material which has been designed to line the aperture of letterboxes in fire resistant doors.

On exposure to a fire the liner will rapidly expand (intumesce) to seal the aperture and stop the spread of fire, smoke and hot gases through the door. The liner has been independently tested in accordance with BS476: Part 22: 1987 and the 50mm can provide in excess of 1 hour fire resistance, 30min 44mm..

LANTAC Building Control Approval

Supplied in packs containing sufficient material to suit any size aperture up to 270x69mm and can be used in both 1/2 and 1 hour fire door assemblies.

Larger sizes available on request.

Warrington Fire Research Assessment - 30 minute liner 44mm, 60 minute liner 50mm.

Liner Colours - Brown & Red. Letterplate colours - Brass and Satin Aluminium effect.

Sold individually or in packs of 6.

Colour & Rating

Our Price: £9.00

Prices include VAT.

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