Circular External Weather Louvre complete with insect screen / bird mesh.

Manufactured from extruded aluminium alloy with a slimline blade on a 38mm pitch. Offers excellent resistance to rain whilst maintaining 50% free area. If you require to maintain the same free air rating increase diameter and use Metal Reducer / Adaptor

Note for intermediate sizes take next size up.

Flanges supplied un-punched.

• Depth: 45mm approx 
• Suitable for external and internal use. 
• Outer / External Diameter: Approx 30mm greater than size quoted 
• Inner / Spigot Diameter: Approx 3mm smaller than size quoted making suitable for direct connection to spiral ducting or flexible ducting
  
• Example: GALCWL-100 - For 100mm ducting - External Diameter: 130mm | Internal Diameter: 97mm