Flat roof polypropylene moisture release vent.
Grey base with white cap.
For use with bituminous felt and plastic roofing materials.
Dimensions: Height 197mm
Diameter of base 267mm
Diameter of aperture at base 184mm.
Each Extra Aqua Vent can provide moisture pressure release up to an area of up to 36 sq. mtrs.
Not for use with cross flow ventilation.