• 30 Minute Fire Protection Fire tested to BS EN 1634-1 and BS 476 part 22, offering reliable fire integrity for up to 30 minutes.

• Superior Sound & Smoke Seal Achieves a 32dB Rw acoustic rating and is smoke tested, featuring a fully sealed backplate and integral sound bumpers.

• Adjustable Telescopic Sleeve Features an adjustable sleeve designed to fit door thicknesses ranging from 40mm up to 80mm.

• Draught Excluders Included Fitted with brush pile draught excluders to minimize air flow and improve thermal efficiency.

• Secure and Durable Finish Finished in polished gold with a black frame and tested to security standards (BS EN 13724) for peace of mind.

Description

This Intumescent Letterbox provides essential fire safety, acoustic performance, and security for internal or external doors. The overall external size is 305mm x 70mm with a polished gold finish and a black frame. It is fire tested to BS EN 1634-1 and BS 476 part 22, providing a 30-minute fire rating. The letterbox incorporates an adjustable telescopic sleeve designed to fit door thicknesses ranging from 40mm to 80mm. Key features include fitted brush pile draught excluders to improve energy efficiency, integral sound dampening bumpers, and a fully sealed backplate to prevent smoke ingress. It also achieves an excellent Acoustic Rating of 32dB Rw and meets security standards (Security tested to BS EN 13724 Clause 6.6.5), making it a comprehensive choice for door hardware. Fixings are included.