The Vevor 6-inch round wall vent cover set is designed to improve airflow for residential ventilation applications such as dryers, bathrooms, kitchens, garages, warehouses, and pet rooms. Made from SUS304 stainless steel with a black finish, these vents are built for long-term durability and resistance to damage and warping. Each vent includes a built-in non-removable protective screen to help reduce the entry of small animals into the duct. The design is compatible with flexible and rigid ducts, and the pre-drilled holes help simplify wall installation. This 2-pack offers a practical ventilation solution with a clean modern look.