304 Stainless Steel Material: The round fan cover is made of high-quality stainless steel, which has good corrosion resistance and can be used in various environments. It is also hard and strong, making it more durable than other materials. Mosquito Net: This grille is a 47º model that keeps rainwater out. It also has a protective mesh on the inside to keep cockroaches and rodents away. This ensures a better and healthier living environment. Easy Installation: For installation, it is necessary to tilt the side buckles of the ventilation hood outwards to prevent the hood from falling off the pipe opening. The buckles are easy to remove and clean (use gloves to protect your hands during installation). Application: Our wall grilles are suitable for all bathroom grilles and fan covers and are also widely used in homes, offices, and industrial applications, where they are ideal for indoor ventilation.