High quality: Our exterior wall ventilation grille is made of 304 stainless steel, hardness and anti-rust performance are better than 201 stainless steel, not easy to deform, anti-rust. Thoughtful design: The middle part has a mesh filter that can protect the house from insects.The semi-wrapped designer cap prevents rain and wind from entering the house. Easy to use: Barb design, the barbs can be reversed to grip the pipe, so that the tube is not easy to fall off, easy to install. Wide Application: Ideal for all dryer vent pipes, bathroom vents and extractors, air conditioners, kitchen fans and vents, all wall vent openings, heat transfer and ventilation systems, dryersgas and electric laundry, extractor hoods as well as a variety of industrial applications. A perfect replacement for the old or rusty drain plug in your home.