20x20x1MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 19.75 x 19.75) - 3 Pack Width_24in + Product Details Size: 30w

+ Product Details Size: 30w x 40h cm

+ Product Details Size - 28"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 24"w X 24"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 20 5/8" width X 26 5/8" height

+ Product Details 24" x 24" x 1" replacement air filters for your furnace

20x20x1MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 19.75 x 19.75) - 3 Pack Width_24in + Product Details Size: 30w+ 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