FlatRoofVent OFT-1 166 Bitumen Flat Roof

The OFT/1 range is suitable for use with soil and vent systems and for both mechanical and natural (passive) ventilation installations. It offers a large free vent area with a low Pascal resistance figure. There are five flange types for different roof covering that suit the OFT1 range ranging from110mm diameter to 166mm; Asphalt, Felt, EPDM, Bitumen, PVC