Material:
Extruded aluminium BZP steel screws or aluminium pop rivets
Sizes:
Minimum heights (flanged units, nominal): WL38: 105mm WL50: 125mm WL75: 185mm
Blade:
Various pitches (WL38 - 40mm, WL50 - 50mm, WL75 - 75mm) All with 45° face slope
Core:
Fixed
Frame:
Standard: Flanged
Optional: Recessed and reversed
Fixings:
Standard: None
Finish
Standard: Mill aluminium
Mass/m2:
face area WL38: 12 kg WL50: 12 kg WL75: 15 kg
Free area:
Approx. 50% (varies with size)
