18x20x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 17.75 x 19.75) - 3 Pack Width_25in + Why HVAC Premium

+ Why HVAC Premium

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 28" OR 28" x 18" duct opening (measured at the opening)

25" X 20"opening dimension (vent opening) - actual total grille size is approx

+ Product Details Size – 16" x 34" or 34" x 16" is the size for the duct opening measurement only

+ Product Details Size – 25"w X 16"h is the size for the duct opening measurement only

18x20x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 17.75 x 19.75) - 3 Pack Width_25in + Why HVAC Premium+ Product Details 18" x 20" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17. 75" x 19. 75") A unique combination of cotton & synthetic fibers gives you the most filtration and the least air resistance equals great air & easy airflow for your system. The non pleated design provides low airflow resistance while still effectively capturing dirt and particles such as standing dust, spray paint