Call us: 01329 841 416
Fast Delivery on all in stock items

Fire Rated Telescopic Letterbox

Intumescent Fire & Smoke Rated Telescopic Letter Box System 12 inch Satin Anodised Aluminium

Intumescent Fire & Smoke Rated Telescopic Letter Box System 12 inch Satin Anodised Aluminium

£17.19 £14.32 (ex. VAT)
306mm x 70mm | 30 minute fire rated letterbox | Acoustic & Smoke tested

FREE DELIVERY on orders over £600 (£500 ex. VAT)*
*excluding Boards, Batts, Mortar products and the following postcodes IM, HS, ZE, JE, GY, KW, FK, PH33 or AB


Key Points:

  • Adjustable Telescopic fitting
  • Tested in accordance with BS 476 part 20 & 22: 1987 (30 minute rated).
  • Acoustic tested achieving 32dB Rw.
  • Tested to BS EN 13724 Clause 6.6.5.
  • Tested in accordance with EN 1634-1: 2004 (30 minute rated).
  • Smoke tested in accordance with BS EN 1634-3: 2004.


The Astro eco telescopic letterbox system range is specifically designed to increase the safety and security of occupants against fire and is particularly suited to multiple occupancy residential buildings. The Astro eco telescopic letterbox is a stylish, ABS framed, telescopic letterbox with metal flaps fitted with a high performance intumescent liner around the telescopic sleeve section. The letterbox flaps open to 180°.

Acoustic and thermal performance features include brush pile draught excluders, integral sound dampening bumpers and a fully sealed backplate. During a fire the intumescent liner rapidly expands and seals off the letterbox opening, preventing the spread of fire and smoke whilst maintaining the integrity of the fire door assembly.

Available in 10 Standard (272mm x 70mm) and 12 Commercial (306mm x 70mm) sizes. Cut out required is 241mm x 57mm for standard size letterbox and 274mm x 57mm for commercial size letterbox.

Both 10" and 12" sizes have a black ABS frame, except the SS which has a silver frame. The letterboxes are available in Satin Aluminium, Chrome Plated, Stainless Steel, Polished Silver, Polished Brass or Polished Gold letter plate flaps.

Smoke Testing was conducted to BS EN 1634-3: 2004 smoke control tests for door and shutter assemblies, openable windows and elements of building hardware Part 3: Smoke control test for door and shutter assemblies.


  • Satin Anodised Aluminium 306mm x 70mm.
  • Cut out size 274mm x 57mm
  • Supplied with internal flap and aperture liner.

Other Fireproof letterboxes:


We have technical representatives who provide assistance in the selection and specification of the products on this site and should be consulted for exact installation and product suitability. Ensure an early engagement with ourselves, designers, main contractor and specialist installers before any installation. Other trades and/or manufacturers may need to be consulted. For in-depth information, specification and technical advice please call our Head Office on Tel: +(0)1329 841416 or email


All interested parties, designer, specifier, main contractor and specialist installers should provide access to allow the fire stopping seals to be regularly inspected and maintained, as well as records kept of such maintenance at minimum periods of 12 months, as required by the Regulatory Reform Order, and repaired if necessary. Reference should be made to ASFP TGD 17 Code of Practice for the Installation and Inspection of Fire Stopping.


It is vital that those entrusted to design or install a fire stopping product have the necessary levels of competence to undertake the task professionally and thoroughly. The level of competency required will be commensurate with the expected complexity of the building. All designers must eliminate, reduce or control foreseeable risks that may arise during installation, construction or maintenance when preparing or modifying designs. Clients should ensure that the principal designer and principal contractor carry out their duties under CDM regulations. The ASFP foundation course in passive fire protection provides essential knowledge as part of demonstrating competency and understanding in this key fire protection specialism.

Additional Notes:

Each fire door and hardware component will have its own test evidence. It is the responsibility of the purchaser to ensure that the product is fully compliant with the relevant test evidence, if in doubt please contact the technical team on: Tel: +(0)1329 841416 or email

Download and review any of the following information:

  • Product Code:
  • MPN:
product review overlay image

Customer reviews

No reviews left yet
Write a review

No reviews have been left for this product, be the first to leave a review