Features: 1.Magnetic: The cover is made of a thick, strong soft rubber magnetic material that holds your vent firmly in place. 2.Perfect Size: Size 14*30cm fits most standard air registers. Plus, you can easily cut it into any shape to completely seal in the air. 3.Simple Look: The white finish is suitable for most living areas such as kitchens, bathrooms and living rooms.Waterproof and easy to clean. 4.Energy Efficient: With this lid, you can efficiently distribute airflow or conveniently close registers in unused spaces. Save electricity, save money! 5.After-sales Service: If you have any problem, please contact us immediately, we will help you solve it as soon as possible. Specifications: Material: Rubber Product Size: 30*14cm Thickness:1mm Notice:1.Actual color may be slightly different from the image due to light effect.2.Please allow 1-3cm deviation due to manual measurement.