Features: 1.Magnetic: The cover is made of a thick strong magnetic material that holds your vent firmly in place. 2.Perfect Size: Size 5.5" X 12" 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. 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: 5.5*12in 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. includes: 4 * Magnetic Vent Cover "