2022BS EN 15269-20:2020 Extended application of test results for fire resistance and/or smoke control for door, shutter and openable window assemblies, including their elements of building hardware - Smoke control for doors, shutters, operable fabric curtains and…
2009BS EN 15269-20:2009 Extended application of test results for fire resistance and/ or smoke control for door, shutter and openable window assemblies, including their elements of building hardware - Part 20: Smoke control for hinged and pivoted steel, timber and metal framed g