Magnetic Vent Covers 4 PCS - HVAC Premium Anisotropic 1.5mm Optimal Thickness - 12" X 5.5" - for Wall, Floor, Ceiling Vent Covers - Trap & Seal Air Height_18in Designed with a built-in ratcheting

Designed with a built-in ratcheting mechanism

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+ Product Details Size – 14" x 16" or 16" x 14" is the size for the duct opening measurement only

High Quality – Rigid aluminum construction with counter-sunk screw holes (screws included) and no sharp edges

+ Product Details Size - 24"w X 16"h is the size for the duct opening measurement only

Magnetic Vent Covers 4 PCS - HVAC Premium Anisotropic 1.5mm Optimal Thickness - 12" X 5.5" - for Wall, Floor, Ceiling Vent Covers - Trap & Seal Air Height_18in Designed with a built-in ratcheting+ Product Details Cut into any shape & size With an original dimension of 12" X 5. 5" inch, you can cut or trim your vent cover to more precisely fit your air vent. 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