GEBA Fire Protection Ceiling Seal AVR 180 DN180 # 32180

with a free cross-section made of galvanized sheet steel, with metallic quick-release fastener, corrosion- and solder-free release device, intumescent material, enclosed by a smooth-walled plastic inner tube with a completely free cross-section. General building authority approval from DIBt Berlin Z-41.3-686. Fire resistance class K90 - 18017. Installation below, in or on the solid ceiling, alternatively below, in or on the F90 B timber beam ceiling. Fastening only by mortar grouting without screws, dowels or mortar anchors. No insulation required. Installation in classified shafts F30/L30 - F90/L90, minimum thickness 35 mm with any covering. For installation in ventilation systems according to DIN 18017-3 in steel ducts, e.g. spiral-seam, specifically in central ventilation systems for supply and exhaust air, as well as for connecting individual ventilation units, fume hoods or extractor hoods without their own fire protection requirements.