WeCooper 304 Stainless Steel Gravity Grille 100mm 4 inch Ducting Air Vent Cover with Not Return Shutters

EASY OUTDOOR INSTALLATION: Step 1: Put the rubber gasket onto the outer edge of the vent frame to minimize noise. Step 2: Insert the nozzle into the ventilation duct and the retainer clips can keep the vent in place. Step 3: Secure the vent with the four screws provided. Please note the diameter of this dryer vent is 3.8" and it can be fit in a 4" diameter pipe or hole HIGH-QUALITY MATERIALS: The air vent covers with suction proof gravity flaps are made of brushed 304 stainless steel material, are durable, not easy to rust and noncorrosive HOME IMPROVEMENT: Perfect for using in tumble dryers vent hoses, bathroom exhaust fan, kitchen range hood extractors, garages, sheds, campers. Ideal for room exhaust and ventilation use. Especially suitable as air vent for home GREAT FOR HOME USE: Exhaust vent cover shuttered close automatically without air current through, and the air vent protects against outdoor noise, odors, birds, animals and rain WARM PROMPT: Please kindly confirm the size you need before ordering to make sure a fit, Manufacturer: WeCooper