calimaero® VKE Air Vent Covers Exterior 100mm Gravity Grille Backdraft Shutter Stainless Steel Extractor Cover, Flaps Close Automatically 4 Inch Fits Only with Metal Ducts

WELL-MADE This calimaero VKE 4 inch wall vent cover with shutter flaps is made of brushed anti-rust and corrosion-resistant stainless steel with countersunk screw holes. The rubber gasket provided creates a tight seal between the vent and the wall. PRODUCT FEATURES The flaps of our louvre extractor fan vent cover closes automatically when not in use. This will guard your equipment against animals, insects and protect you from unpleasant odors, noises, or rain from flowing back. Technical data: DN 100mm / 4 Inch, square dimensions 158 x 158mm, screw holes 137 x 137mm, depth 52mm. VERSATILE APPLICATION This external vent cover is designed for your home improvement. This is ideal for passive ventilation, air conditioning, HVAC, and Heat Recovery System. The typical fluttering noises should be considered when installing next to living rooms. EASY INSTALLATION This extractor grille cover can be installed with standard tools. You only need to insert into the ventilation pipe or flexible pipe and fasten it to the wall with the screws provided. NOTE This is to be installed in metal ducts only. Measure the diameter of your duct before purchasing. We are experts in ventilation for more than 40 years. If you have any questions or complaints, please contact our customer service directly. Your request will be processed immediately., Weight: 0.18 Pounds, Manufacturer: calimaero