Magnetic Vent Covers 4 PCS - HVAC Premium Anisotropic 1.5mm Optimal Thickness - 5.5 X 12 inch - for Wall, Floor, Ceiling Vent Covers - Trap & Seal Air

Key features

• Strongest magnets – our anisotropic magnetic vent covers provide the strongest magnetization and seal to your register grilles, vents or diffusers and can even be installed on ceiling vents unlike most magnetic vent covers in the market today.
• Thickest vent covers - our magnetic vent covers are optimal at 1.5mm of thickness to ensure a proper seal while being light and .1 mm of PVC coating which can be installed on sidewall, floor, & ceiling register grilles, vents, or diffusers in the home, office, RVs, boats, and virtually anywhere with an HVAC System. They latch on securely without needing to worry about detachment.
• Save money– save money on your bills today by using our strong magnetic vent covers to seal air and prevent any heating or cooling to go to waste in vacant spaces. The temperature range is -4° to 230°F
• Cut into any shape & size – with an original dimension of 5.5 X 12 inch, you can cut or trim your vent cover to more precisely fit your air vent.