12" x 20" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 11.75 X 19.75] 3-Pack w6h6 including the ability to mount

including the ability to mount without removing the thermostat when using the ring base

+ Product Details Size - 34"w X 14"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 8" OR 8" x 24" duct opening (measured at the opening)

Rust-Free Aluminum - Made from strong

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12" x 20" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 11.75 X 19.75] 3-Pack w6h6 including the ability to mount+ Product Details Size 12"w X 20"h pleated MERV 8 filter for HVAC return filter grille 3 Pack. Actual dimensions: 11. 75" X 19. 75" High Quality A uniquie combination of cotton & synthetic fibers gives you the most filtration and the least air resistance equals great air & easy airflow for your system Design The "W" shaped pleats give you more filter surface thereby capturing more dust. Our metal and paper diagonal support bars ensure the filter can