FIRESTOP 305mm Intumescent Telescopic Letter Plate

The Firestop 305mm Intumescent Telescopic Letter Plate is a stylish and reliable door furniture solution designed specifically for fire-rated doors. Featuring a durable ABS plastic frame and robust metal flaps, this letterbox is fitted with a high-performance intumescent liner. In the event of a fire, the liner expands rapidly to seal the aperture, preventing the spread of fire and smoke to maintain the door's integrity.

Engineered for versatility, this telescopic letterbox is suitable for timber doors with a thickness ranging from 40mm to 80mm. It features an integrated internal draught excluder and an external weatherseal to protect against draughts and weather elements.

This product is available in multiple finishes, including Gold, Polished Silver, and Satin Anodised Aluminium, with weights ranging from 490g to 560g. Please choose your preferred finish, manufacturer reference, and barcode from the options below.

Technical Specifications

• Brand: Firestop
• Width: 305mm (30.5cm)
• Opening Size: 35mm x 255mm
• Door Thickness Compatibility: 40mm to 80mm
• Fire Rating: 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
• Frame Material: ABS plastic
• Flap Material: Metal
• Weight: 490g to 560g (please choose from the options below)
• Manufacturer Reference: FS306, FS307, or FS1501 (please choose from the options below)
• Barcode: Multiple options available (please choose from the options below)

Key Features

• High-performance intumescent liner expands when heated to seal the opening and prevent the spread of fire and smoke
• Fully fire and smoke tested to British and European standards
• Integrated internal draught excluder and external weatherseal for weather protection
• Telescopic sleeve design adjustable for doors from 40mm to 80mm thick
• Available in multiple stylish finishes to suit your door furniture (please choose from the options below)