Features: The ceiling vent covers are suitable for cold and warm air conditions, which are sturdy enough for heating or cooling, serving you for a long time. This ceiling register vent cover can be widely applied to commercial use and domestic use, fitting for restaurant, hotel, motel, library, market, living room, and more. Specifications: Material: steel Color: black Size: 12 x 6 inch Package includes: 4 x Vent covers 8 x Screws Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.