PRODUCT SPECIFICATIONS: Package includes 1 diameter stainless steel louvered outdoor dryer vent cover and 4 x installation screw. Find the matching ventilation equipment to build the perfect ventilation system!S: Our exterior wall vent hood is made of 304 stainless steel material well-tested by the manufacturer, provide rust and resistance in any weather conditions. The self-closing shutter flaps protect your equipment Safe from annoying rodents like mice, rats, birds, snake and squirrels. In addition you can disassemble the wire mesh for optimal ventilation efficiencyWIDE APPLICATION: The louvered vent cover is ideal for vent hose, which allows for maximum exhaust airflow when venting. And perfect for bathroom vents, air conditioning units, kitchen fans & extractors, heat transfer and ventilation systems, gas & electric dryers, cooker hood extractors and all home wall vents, as well as a wide variety of industrial usesEASY TO INSTALL: In order to make the installation easier, we have equipped each vent cover with 4 screws. Just inserting the vent hose into the louvered vent cover, then you only need to mount it with screws and silicon seal. You can also use a marker to record the positions of the 4 screw holes according to the size of the ventilation cover, and use an electric drill to drill the holes. Just minutes to do that, also easy to remove and cleanSize:125mmColor:SilverMaterial:304 Stainless SteelPackage Contents:1 * Metal Dryer Vent CoverOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.