21 in W X 21 in H X 1 in D Fiberglass 4 MERV Air Filter, 12PK, Pamlico Air, Mfr#: 11104-012121

The Pamlico select FDC oneside reinforced die cut fiberglass air filter is costeffective and efficient with a heavy duty and disposable fiberglass filter in a durable kraft board twopiece die cut frame Our select FDC air filter features durable construction including heavyduty frame with reinforced grids on oneside