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Astroflame Intumescent 30 Min Fire Rated Telescopic Letterbox System
Astroflame Intumescent 30 Min Fire Rated Telescopic Letterbox System
Astroflame Intumescent 30 Min Fire Rated Telescopic Letterbox System

Astroflame Intumescent Fire Rated Telescopic Letterbox System

AST5423

Specifically designed to increase the safety and security of occupants against fire and is particularly suited to multiple occupancy residential buildings. Stylish, ABS framed, telescopic letterbox with metal flaps fitted with a high performance intumescent liner around the telescopic sleeve section.

  • 30 minute fire rated letterboxes suitable for FD30/FD30S fire doors
  • Telescopic fitting - adjustable to fit doors 40mm-80mm thickness
  • Wide range of letter plate finishes
  • 10" Standard or 12" Commercial sizes
  • High performance intumescent liner
  • Tested to BS 476 part 22: 1987, 30 minute rated
  • Tested to BS 476 Part 31/1: 1983
  • Acoustic tested achieving 32dB Rw
  • Tested to BS EN 13724 Clause 6.6.5
  • Tested to EN 1634-1, 30 minutes
  • Smoke tested in accordance with BS EN 1634-3: 2004
Item
£13.33(incl. VAT)
£11.11(ex. VAT)
Quantity
Please choose your colour
Available for Delivery (See Delivery Options Below)

questions 4 questions about the product
Description

The Astroflame Intumescent Fire Rated Telescopic Letterbox System is specifically designed to increase the safety and security of occupants against fire and is particularly suited to multiple occupancy residential buildings. Stylish, ABS framed, telescopic letterbox with metal flaps fitted with a high performance intumescent liner around the telescopic sleeve section.

  • 30 minute fire rated letterboxes suitable for FD30/FD30S fire doors
  • Telescopic fitting - adjustable to fit doors 40mm-80mm thickness
  • Wide range of letter plate finishes
  • 10" Standard or 12" Commercial sizes
  • High performance intumescent liner
  • Tested to BS 476 part 22: 1987, 30 minute rated
  • Tested to BS 476 Part 31/1: 1983
  • Acoustic tested achieving 32dB Rw
  • Tested to BS EN 13724 Clause 6.6.5
  • Tested to EN 1634-1, 30 minutes
  • Smoke tested in accordance with BS EN 1634-3: 2004

The letterbox flaps open to 180° and the adjustable telescopic sleeve can be set to suit 40mm - 80mm
door thickness.

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.

Adjustable to suit door thickness from 40mm – 80mm.

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.

Product Details
5423-885956

Data sheet

Manufacturer
Astroflame
For Use By
Professional Use
For Use On
Timber door
Sheen
Metallic
Pack Size
1
UN Number
N/A
Suitable For Use On
Timber Doors
Manufacturer
Astroflame
Product Usage Type
Letterbox
Colour Family
Metallic
Fire Rating
30 Minutes
Attachments
Download


Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

Questions

Question about the product

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questions Keith on 2024-11-04 18:41:54
Question: 

Can this item be installed vertically and still meet fire safety requirements

Answer from Rawlins’ Technical Team:

No, the manufacturer has advised this system has only been tested horizontally to adhere to fire safety requirements.

questions Max on 2024-06-07 14:44:10
Question: 

Does this come with fire rated certificate?

Answer from Rawlins’ Technical Team:

This system doesn't come with any form of certification when purchased.

If required, this can be requested by e-mailing the manufacturer after purchase/application

questions Ray Robson on 2024-04-03 13:46:20
Question: 

What if an arsonist wedges say, a newspaper or stone in letter box opening and sets fire to it? How does the intumescent liner deal with this situation?

Answer from Rawlins’ Technical Team:

Thank you for your enquiry, the testing data we have for this product doesn't have any results relating to this type of scenario, the intumescent letterbox will expand, seal gaps and prevent fire from getting through.

An Anti-Arson box maybe a better option if you are wanting to protect against this.

questions Yw on 2023-10-08 07:51:39
Question: 

Is this the “complete” letterbox fitting (outer flap, door inner part plus inside flap) or just the outside and inside flap please? Many thanks.

Answer from Rawlins’ Technical Team:

This product is supplied as a complete letterbox, consisting of the internal/external frames and plates, and the corresponding section that passes through the fire door.

IMPORTANT SHIPPING & DELIVERY INFORMATION

Astroflame Intumescent Fire Rated Telescopic Letterbox System is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

All delivery costs below are excluding VAT