Metal Gravity Louvre Grille Flap Air Vent Shutter for Industrial Commercial Fans (18" /520mm x 520mm)

• Metal Shutter
• All-Weather Protection: Designed to stop rain, wind, and backdraught when the extractor fan is not in use.
• Easy to mount on the wall, providing a seamless solution for protecting your extractor fan.
• Suitable for extractor fans in sizes 8", 10", 12", 14", 16", 18", 20", 22", and 24"
• Perfect for industrial, commercial, and residential settings requiring effective weatherproofing.

PRODUCT OVERVIEW Powerstar Electrical: Louvre shutter for extractor fans all weather - Air Operated when airflow commences - backdraught Metal shutter for mounting on the wall to stop rain and wind when the fan is not in use. Louvre shutter is of good quality metal and powder coated to prevent rusting. Suitable for 8", 10", 12", 14", 16" 18", 20", 22" and 24" Inches fans. 8” 200 MM, A (mm)240, B (mm)270, C (mm)240, D (mm)270 10” 250 MM, A (mm)290, B (mm)320, C (mm)290, D (mm)320 12” 300 MM, A (mm)340, B (mm)370, C (mm)340, D (mm)370 14” 350 MM, A (mm)390, B (mm)420, C (mm)390, D (mm)420 16” 400 MM, A (mm)440, B (mm)470, C (mm)440, D (mm)470 18” 450 MM, A (mm)490, B (mm)520, C (mm)490, D (mm)520 20” 500 MM, A (mm)540, B (mm)570, C (mm)540, D (mm)570 22” 550 MM, A (mm)590, B (mm)620, C (mm)590, D (mm)620 24” 600 MM, A (mm)640, B (mm)670, C (mm)640, D (mm)670