16X20X4 (15_1/2 X 19_1/2 X 3_5/8) Pleated MERV 12 Air Filters 2 Pack | Actual Si
Important Note: Almost ALL furnace filters have a different “actual size” than the nominal size printed on the air filter. With the 4″ and 5″ air filters there is a wider variance between the nominal and actual size depending on the manufacturer.