Description: Material: Air Vent is Made of stainless steel 304, high hardness, sturdy, durable, anti rust and . Design: Ventilation Grille Cover is designed of round flat cover with 45°Louver and built in fly screen mesh,inside louver design has secondly rainproof effect to prevent rain from damage,fly sceen mesh to prevent mice, birds, etc. from nesting. Barb Design: Ventilation Ducting Hose Covers with Barb design, can adjust the angle to fasten the pipe in one direction, preventing the pipe and the hood from falling off. Hood: The front of the hood is spherical, which can effectively prevent rainwater and debris from entering, and its spherical shape is very good to reduce exhaust resistance Widely Use: The ventilation duct cover can be perfectly used for indoor exhausting,perfect for bathroom vents and extractors, air conditioning units, kitchen fans and vents, all home wall vents, gas and electric dryer etc.. Specification: Material: 304 Stainless Steel Package Includes: 1 Piece Air Vent Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!