12" Intumescent Letter Boxes - Brass Letterbox (black ABS frame)
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Fire Tested to BS476 part 22, Smoke Tested to BS476 part 31.1, Acoustic Tested to BS EN ISO 240-3 achieving 32dB Rw, Security Tested to PAS 23/24. 30 min fire rated. Adjustable telescopic sleeve set to suit 40-80mm door thickness. Fitted with brush pile draught excluders.