Intumescent Fire Rated Letter Plates
Intumescent fire and smoke rated telescopic sleeved letterboxes.
30 Minute FD30 rated and 60 minute FD60 rated options available.
Sleeved design with internal brush seals and intumescent liners.
Fire tested to BS 476 part 22: 1987, 30 minute rated suitable for use of FD30 fire doors.
- Smoke tested to BS 476 Part 31/1: 1983.
- Acoustic tested to BS EN ISO 140-3:1995 Achieving 32dB Rw.
- Security tested to BS EN 13724 Clause 6.6.5.