【Quick Installation】The air cap is installed by inserting the nozzle into the ventilation pipe. Tightening the rubber gasket requires a little tact. Then the ventilation grille is attached to the wall using the four screws provided. The stainless steel square vent does not have tabs, fixing screws, fixing clips and washers. You will need to equip these parts yourself. 【Rainproof Design】45 degree exterior opening, weatherproof design. This is the outlet of the wall ventilation hood. Effective for air release and prevents harmful entry into hoods They are ideal for use in domestic and commercial exhaust applications. 【Quality Guarantee】1 x Outdoor Ventilation Grille The external dimensions are as follows: 184 mm x 184 mm/7.24 inches x 7.24 inches; Weight: approx. 305 g. Stylish and exhaust outlets that are ideal for the modern home. If you have any questions, you can contact us by email 24 hours a day. 【Good Quality】This outdoor ventilation grille made of 304 stainless steel material, durable, anti-rust and corrosion resistant. This valve to make the air exhaust from the dryer aesthetically and prevent the intrusion of animals and insects. This ventilation grille allows you to exhaust the hot air from the air conditioner, aesthetic and solid, it fulfills all your conditions remains more than to install. 【Wide Application】Our dryer rack is perfect for use in dryer vent pipes and pipes, bathroom vents and vents, air conditioning units, kitchen fans and vents, electric dryers, hood extractors and many other industrial uses. Rear connection for connection to air ducts with an internal diameter of 100 mm., Weight: 0.6834330122 pounds, Manufacturer: Zerodis