304 Stainless Steel Materials: The round vent hood is made of high-quality stainless steel, which has good corrosion resistance and can be used in various environments. It also has good hardness and strength, making it more durable than other materials. Mosquito Net: This net is a 45º model that prevents rainwater from entering. It also has a protective screen inside to prevent cockroaches and rodents from entering. So that you can enjoy a better and healthier life. Easy Installation: Before installation, you need to tilt the side rings of the vent cap outward to prevent the cap from falling out of the vent opening of the pipe. The loops are easy to remove and clean (wear gloves to protect your hands when installing). Application: Our wall vents are suitable for all bathroom vents and extractor hoods and are also commonly used in residential, industrial and office applications, where they are ideal for internal ventilation.