Package Inclusion and Efficiency: the package includes 4 pieces of magnetic vent covers, which is a sufficient quantity for multiple uses; Ensuring you have enough quantity to use across different vent ports, whether you have multiple rooms or just want to stay prepared for any vent outlet Compatibility with Precise Size: these vent covers for home floor showcase a simple yet efficient design, sized about 6.5 inches in diameter, making them a proper fit for vents, RVs, home ceiling, air outlets, floor, walls, and heat vents; Crafted to work smoothly with any magnetic metal covers, they are unfortunately not suited for aluminum, wood or plastic materials Reliable Material for Ultimate Reliability: these air vent covers are crafted from soft rubber and magnet material, delivering a nice performance that does not affect the functional use of your vents; The reliable material gives these covers certain thickness and weight, ensuring durability and robustness, fit for long term use Customizable Flexibility and Easy Trim: our ceiling air vent covers feature a simple design that's easy to trim; You can adjust the size and shape according to your needs, ensuring the perfect match for each vent outlet; The white color provides a seamless blend with your decor, accentuating its versatility Efficient and Versatile Vent Protection: these RV heater vent cover to keep out cold air and block noise effectively, providing you a more comfortable and quiet living environment; Whether you need to block the cold winds in winter or the noise from the vent, these magnetic vent covers are your versatile solution Temperature control and Energy Efficiency: Magnetic air vent covers allow homeowners to control the temperature in specific rooms by sealing off air vents. They prevent cold or warm air from entering rooms, which can help create a more comfortable living or working space. By blocking off vents in unused rooms, homeowners can improve their home's energy efficiency. This can bring to lower energy costs because the heating or cooling systems have less space to heat or cool. Dust Reduction: Heat vent covers floor can also prevent dust from circulating through the home by sealing off vents. This can be especially beneficial for those suffering from bad air. Colour:As Shown Material:rubber Package Contents: 1 set x magnetic return air vent covers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.