Vents for Flat Roof (OFT/3A)
A range of void ventilators for use in asphalted roofs
Function:
ROOF FINISH VOID VENTS
Asphalt OFT/3A
Free Vent Area: 110 Ø = 8400mm²
131 Ø = 12000mm²
166 Ø = 20000mm²
Roof Finish: Asphalt (coded Suffix A).
Colour: Black
Components:
Size Type
Diameter (mm)
Height Above Roof (mm)
Flange Diameter (mm)
Depth Below Flange (mm)
OFT/3FA
110
300
395
50
 
131
300
450
50
166
450
450
50
 
Features: OFT/3– Void vents.
Pack Information: