18 x 12 Merv 2 HVAC Pleated Filter, 12-Pack Compatible with Duct 10" + Product Details Size –

+ Product Details Size – 25"w X 30"h is the size for the duct opening measurement only

Actual Filter Size – 17 3/4"w x 23 3/4" x 1"

+ Product Details Heavy Duty Cutters – SawTooth Design with Edge Serration for cutting Stainless Steel below 0

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 26" OR 26" x 28" duct opening (measured at the opening)

+ Product Details Size – 36"w X 14"h is the size for the duct opening measurement only

18 x 12 Merv 2 HVAC Pleated Filter, 12-Pack Compatible with Duct 10" + Product Details Size –+ Product Details Size 18"w X 12"h pleated MERV 2 filter for HVAC return filter grille 12 Pack. Actual dimensions: 17. 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