4pcs Magnetic Ventilation Covers for Standard Air Registers Floor Holes (5.5 x 12)

Warm Tips- Aluminum vents are not magnetic, use a refrigerator magnet to check if your ventilation is magnetic before buying. Cut to any size - 12" x 5. 5 inch magnetic ventilation cover fits most standard air registers and can be cut freely to fit specific vents. Good Flexibility - Excellent flexibility ensures that it contours around floor openings to completely turn off the air flow. Double Thickness - Made of double thick magnetized material, the cover can hold your vent firmly in place. Energy-saving - These covers allow you to efficiently distribute your airflow or completely seal registers in unused areas.

Price: 66.87 from Bol.com