FIRESTOP 255mm Intumescent Telescopic Letter Plate

The Firestop 255mm Intumescent Telescopic Letter Plate is a stylish and highly functional door furniture solution designed specifically for fire and smoke protection. Constructed with a robust ABS plastic frame and a durable metal flap, this letterbox is fully tested and certified for use on fire-rated doors.

At the core of its design is a high-performance intumescent liner. In the event of a fire, this liner expands rapidly when heated, sealing the letterbox opening to prevent the spread of fire and smoke, thereby maintaining the integrity of the fire door.

To ensure year-round comfort and protection against the elements, the letter plate is equipped with an internal draught excluder and an external weatherseal to keep out wind and rain. It features an adjustable telescopic sleeve designed to fit doors with a thickness ranging from 40mm to 80mm.

This telescopic letter plate is available in multiple finishes, including Gold, Polished Silver, and Satin Anodised Aluminium, with corresponding manufacturer references (FS1506, FS1505, and FS303) and barcodes. Please choose your preferred finish, reference, and barcode from the options below.

Technical Specifications

• Brand: Firestop
• Width: 255mm (25.5cm)
• Opening Size: 35mm x 220mm
• Door Thickness Compatibility: 40mm to 80mm
• Fire Resistance: 1/2 hour (30 minutes) tested to EN1634-1 and BS 476: Part 22
• Standards: BS EN 476 Part 22:1987, BS EN ISO 240-3, BS EN 1634-1, BS EN 476-31.1
• Weight: 490g
• Packaging: Boxed
• Finishes: Gold, Polished Silver, or Satin Anodised Aluminium (please choose from the options below)
• Manufacturer References: FS303, FS1505, or FS1506 (please choose from the options below)
• Barcodes: 5056240117140, 5056240117157, or 5056240117164 (please choose from the options below)

Key Features

• Intumescent Fire Protection: High-performance liner expands when heated to block fire and smoke.
• Tested & Certified: Fully fire and smoke tested to BS and EN standards.
• Durable Construction: Built with a strong ABS plastic frame and a metal flap.
• Weather & Draught Protection: Features an internal draught excluder and an external weatherseal.
• Telescopic Design: Easily adjusts to suit doors between 40mm and 80mm thick.
• Choice of Finishes: Available in multiple stylish finishes to match your door hardware (please select below).