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- Fire-resistant metal body with certified intumescent protection
Polished Silver
- X-Large (300 x 170mm) - Cut Out: 140–270mm
meeting rails
Astro FX Telescopic Letter Box (30-60min) 12 inch Color:Polished Silver - Fire-resistant metal body withA commercial grade telescopic letterbox engineered to preserve the fire performance of FD30 and FD60 doors. The intumescent liner expands under heat to seal the aperture and help maintain door integrity. Telescopic side sections allow fitting to a range of door thicknesses. Brush pile draught excluders and sound dampening bumpers improve usability, while the metal frame and flap deliver a professional, durable finish suitable for residential and multi
