SitaVent Fireguard® for preventive fire protection and to prevent the spread of fire from below where there are small flammable penetrations to DIN 18234 part 3 and 4, for roofs with polyurethane insulation, consisting of: PE base body, collar for fixing to the reinforcement plate and for clamping the vapour barrier, base plate with foamed-in connection sleeve of choice (495 mm x 495 mm), rust-proof stainless steel pipe, DN/OD 150/160, 750 mm long, for insulating material thicknesses from 80 to 450 mm, seven-lip sealing ring and rain deflector made of polyamide. For direct connection to pipes with plug-in coupler, with sealing sleeve and reinforcement plate to DIN EN 1090-4, with pre-assembled fire protection sleeve and 2-part insulating body made of mineral wool 300 x 300 x 200 mm, supply and install to professional standards.