Manufacturer: Greenwood
Colour: Available in White, or Brown
Length: Available in 305mm, 400mm, or 550mm
Height: 22mm
Slot Height: 16mm
Slot Length: 265mm (for 305mm length), 175mm/10mm Bridge/175mm (for 400mm length), 250mm/10mm Bridge/250mm (for 550mm length)
Equivalent Area (mm²): 2500mm² (for 305mm length), 3200mm² (for 400mm length), 4200mm² (for 525mm length)
Airbourne Sound Insulation: 35dB (for 305mm length), 33dB (for 400mm length), 32dB (for 550mm length)
Air Permeability @ 50 Pa (m²/hr): 1 (for 305mm length), 4 (for 400mm length), 10 (for 550mm length)
Watertightness Pressure @ no leakage (Pa): 500Pa (for 305mm & 400mm length), 600Pa (for 550mm length)
Fixing: Screw fix

Greenwood Vents

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