12" x 20" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 11.75 X 19.75] 3-Pack w10h10 + Product Details Size –

+ Product Details Size – 10" x 30" or 30" x 10" is the size for the duct opening measurement only

+ Product Details Size – 14"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 10 5/8" width X 36 5/8" height

crafted from heavy gauge steel for unparalleled durability

5" width x 11

12" x 20" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 11.75 X 19.75] 3-Pack w10h10 + Product Details Size –+ 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