Intumescent Fire/Smoke & Acoustic Telescopic Letterbox System

Trade Names:
ASTRO TELESCOPIC LETTER BOX FS (FIRE/SMOKE)
ASTRO TELESCOPIC LETTER BOX FSA (FIRE/SMOKE/ACOUSTIC)

Introduction

The purpose of this document is to give guidance to approved contractors and suppliers who are engaged in the fire stopping of fire rated structures using the Astro Telescopic Letter Box System. All fire door assemblies must be fire stopped to prevent the passage of fire, smoke and hot gases and must maintain their integrity through out the life of the door. The key points for passive fire protection products are :-

Maintain pressure differential between compartments and ventilation channels.

The Astro Telescopic Letter Box

The Astroflame telescopic letter box system range is specially designed to increase the safety and security of occupants against fire, Smoke and Sound Pollution.

The range includes models which are fire-rated from 30 minutes to 1 hour. Where relevant, particularly for multiple occupancy residential buildings, letterboxes have been fire and smoke-seal tested to BS 476 PART 22 for 30 or 60 minutes fire rating.

Our fire & smoke telescopic letter box also carries an Acoustic rating to 29db/Rw sound reduction criteria as outlined in Approved Document E for door sets. Tested to BS EN SO 140, Tested to BS EN 20140-10.

Standard lengths 2100mm - Longer lengths up to 3m to order.

Installation

Tape template provided to door face checking it is centred and level.

Mark out sleeve and fixing holes

Drill fixing holes 8mm Max

Assemble letterplate into position ensuring hexagonal fixing screw is on the inside of the door

Tighten hexagonal fixing screws using 2.5mm key

Compliance

Astro Telescopic Letter Box are manufactured in the EU, meeting the highest quality standard in compliance with ISO EN 9001:2000 . For fire test certification contact Astroflame Fireseals technical department.

Fire Tests

Certifire Approved- CF 255

Tested to BS 476 PART 22 for 30 or 60 minutes fire rating

Tested to BS EN ISO140 to 29db/Rw for acoustic rating

Storage and disposal

Astro Telescopic Letter Box should be stored indoors. No shelf life is given as this product will not deteriorate in storage.

For additional testing, certification or technical information please contact ASTROFLAME FIRESEALS LTD.

Issue 01/06

The above information to the best of our knowledge is true and accurate and based upon current test data and is supplied for your guidance only. Customers should satisfy themselves to the suitability of the product in its intended use and no guarantee is given or implied since the conditions of actual use are beyond our control. ASTROflame (Fireseals) Ltd, disclaim any liability for loss, damage or other expense arising from the use of information, data or products mentioned or referred to and reserve the right to change any details or specifications without notice.