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40"w X 16"h Is The Size For The Duct Opening Measurement Only
Heavy-gauge all-steel construction
Filter Size - 25
+ Product Details Size – 18"w X 26"h is the size for the duct opening measurement only
+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 20" OR 20" x 32" duct opening (measured at the opening)
Magnetic Vent Covers 4 PCS - HVAC Premium Anisotropic 1.5mm Optimal Thickness - 15.5" X 8" - for Wall, Floor, Ceiling Vent Covers - Trap & Seal Air Color_Red Oak 40"w X 16"h Is The+ Product Details Cut into any shape & size With an original dimension of 15. 5" X 8" 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