GEBA Fire Protection Ceiling Seal AVR 80 DN80 # 32080

with clear cross-section made of galvanized sheet steel, with metallic quick-release fastener, corrosion-free and solder-free trigger device, intumescent material, enclosed by smooth-walled plastic inner pipe with completely clear cross-section. General building permit 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 occupancy. For installation in ventilation systems according to DIN 18017-3 in steel ducts, e.g. spiral-wound ducts, in central ventilation systems for supply and exhaust air, and for connecting individual ventilation units, fume cupboards or extractor hoods without their own fire protection requirements.