18x20x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 17.75 x 19.75) - 3 Pack 6" Round Duct Pipe Design – Rigid gauge ABS

Design – Rigid gauge ABS plastic

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 28" OR 28" x 24" duct opening (measured at the opening)

75" Width X 13

16"w X 3"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 6" Round Duct Pipe Design – Rigid gauge ABS+ 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