Material: The circular vents are made of plastic, which is moisture-resistant and rust-resistant, resulting in a more aesthetically pleasing installation. Design: The vents feature a circular mesh design with small holes that prevent dust and clogs. Installation: Holes of the same diameter can be installed directly, and the threaded slots provide a secure fit. Application: The circular soffit vents are suitable for cabinets, shoe cabinets, wardrobes, TV cabinets, drawers, and other applications where ventilation is required, such as offices, bathrooms, and kitchens.