Intumescent Letterbox Assemblies 254mm. SSS Black a bolt through 76mm tubular

a bolt through 76mm tubular latch and pair and half of hinges

All levers are G304 grade with Grade 201 rose inners and a secure heso spindle fix

British Standard BS3621 Rated Sashlock used as a matter of course by the national house builders

Grade 11 Ball Bearing Hinge

Intumescent Letterbox Assemblies 254mm. SSS Black a bolt through 76mm tubularIntumescent Letterbox Assemblies 30 min's Fire Protection. 254mm BS EN 1935. Smokeproof. Comes with a 10 year mechanical guarantee and is Fire door rated. A stylish ABS framed, adjustable telescopic sleeved letterbox, with metal flaps and fitted with a high performance intumescent liner. In the event of fire the intumescent liner expands rapidly and seals off the letterbox opening, preventing the spread of fire and smoke whilst maintaining the