14 in. W X 18 in. H X 1 in. D Fiberglass 4 MERV Air Filter
20 in. W X 20 in. H X 1 in. D Fiberglass 4 MERV Air Filter
NaturalAire 15 in. W x 24 in. H x 1/4 in. D 4 MERV
NaturalAire 15 in. W x 24 in. H x 1/4 in. D Polyest
NaturalAire 20 in. W x 30 in. H x 1 in. D Natural H
