Fire protection boxes - fire resistance for timber construction Fire protection installation boxes for laminated plywood construction Fastened using TC claws that anchor themselves in the wood Fire protection, sound insulation, airtight ETA-18/0628 Safe, standard-compliant solution Fire resistance class to EI90 https://elecena.pl/product/29449265/7500064-fire-protection-box-bs3500tc-for-timber-construction-pipe-ent 2025-10-23 https://elecena.pl/product/29449265/7500064-fire-protection-box-bs3500tc-for-timber-construction-pipe-ent 2026-11-05