20x20x1MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 19.75 x 19.75) - 3 Pack 12in diameter Two Mounting Base Options –

Two Mounting Base Options – Includes both a solid base and a ring base

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 36" OR 36" x 20" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 36" or 36" x 10" duct opening (measured at the opening)

Say goodbye to low-quality fiberglass filters below MERV 4

lightweight aluminum

20x20x1MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 19.75 x 19.75) - 3 Pack 12in diameter Two Mounting Base Options –+ Product Details 20" x 20" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 19. 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