12 x 12 Merv 2 HVAC Pleated Filter, 12-Pack Drop Ceilings / Aluminum For a visual guide on

For a visual guide on how to measure your vent hole before ordering a grille

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 18" or 18" x 8" duct opening (measured at the opening)

+ Product Details Size – 10"w X 18"h is the size for the duct opening measurement only

+Product Details Size – 4"h x 10"w is the size for the duct opening measurement only

12 x 12 Merv 2 HVAC Pleated Filter, 12-Pack Drop Ceilings / Aluminum For a visual guide on+ Product Details Size 12"w X 12"h pleated MERV 2 filter for HVAC return filter grille 12 Pack. Actual dimensions: 11. 75" X 11. 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 increase the surface area, effectively capturing dirt and particles such as pollen, dust mites, standing dust, spray paint