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These magnetic vent covers seal HVAC registers to redirect airflow and save energy. Each cover measures 15.5 by 8 inches and is 1.5mm thick with a PVC coating, using anisotropic magnets for a strong hold on wall, floor, and ceiling vents. They can be cut to fit smaller vents. Compared to thinner covers, they offer a more secure seal and are less likely to fall off. Owners praise their holding power and ease of use, though some note they may not fit all vent sizes without trimming.
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Reviewers give these vent covers high marks for their strong magnets and effective sealing, often noting they stay put on ceilings. Some mention that trimming is necessary for a perfect fit and that the material can be tricky to cut.
This set of four magnetic vent covers seals off wall, floor and ceiling register grilles, vents and diffusers. Closing a vent traps air and keeps heating or cooling from going to vacant spaces. They can be used in homes, offices, RVs, boats and other places with an HVAC system.
Each cover is made with anisotropic magnets and is 1.5 mm thick. A 0.1 mm PVC coating covers the surface. The magnets hold the cover to the vent, including on ceilings, and the thickness keeps it light.
Each cover measures 15.5" x 8" and can be cut or trimmed to fit a smaller vent. It works in temperatures from -4°F to 230°F.
