The OFT terminal range is suitable for use with soil & vent systems and for both mechanical and natural (passive) ventilation installations.
The OFT 5 range has a higher insulation value above the roof space which therefore reduces the risk of condensation.
Large free vent area/Low Pa resistance
Fully Insulated to the cowl
2 piece stack aluminium flange
Allows termination through a flat roof void to ducting up to 180mm when used with reducers
Height above roof: 380mm
Flange Diameter: 490mm
Depth below roof: 608mm
Free vent area: 11,300mm²
Pa resistance: 5.3
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