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Intumescent telescopic letterbox

A popular selection for multiple occupancy residential buildings, our intumescent telescopic letterbox offers effective protection from smoke and fire for 30 minutes. 
  • £32.26
  • excluding VAT
  • (£38.71 inc. VAT)
Full price: £49.99, saving £17.73
  • 35% less
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FREE Next Working Day Delivery
Delivered next working day if ordered before 2pm
Free 90 Day Returns
  • Product no.
    ILBFX30SA


An intumescent liner surrounds the telescopic sleeve. If a fire occurs, the liner automatically expands and seals the letterbox. This ensures the fire is contained, and the effectiveness of the fire door is not compromised. Appropriate for installation in doors measuring 40-65mm in thickness.

We offer this letterbox is two standard sizes. The residential version measures 272mm x 70mm. The commercial option measures 306mm x 70mm. Your choice of polished brass, polished chrome, satin aluminium or stainless steel for the letter plate finish. Maximum tested height of installation, as measured from the floor, is 1050mm. Tested and in compliance with all BS476 Parts 22 and 31.1 requirements.

Please note surround colour may differ from the images shown  

  • MPN
    AFTLBFX/30PB
  • EAN
    5060427420480
  • BRAND
    Astroflame
  • Google product category
    Home & Garden > Fire & Gas Safety
  • Size
    272mm x 70mm, 306mm x 70mm
  • letterplate
    Satin aluminium, Stainless Steel, Polished chrome, Polished brass
  • Tested to BS476 Parts 22 and 31.1
  • 30 minute fire and smoke rated
  • Two sizes: 272mm x 70mm (residential) or 306mm x 70mm (commercial)
  • Suitable for door thickness from 40mm-65mm
  • Available in 4 finishes - satin aluminium or steel and polished brass or chrome
  • Fully sealed letter plate flaps and back plate
  • Complete with internal flap and aperture liner
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