4" Inch Glasfloss PURII162049 Antimicrobial Pleated Air Filter – 16x20X4 (3 PCS).
Measures 15-1/2″ x 19-1/2″ x 3-3/4″. High-efficiency MERV 14 mini-pleated air filters, made in the USA. Glasfloss PURACELL II filters offer efficient filtration and reduced weight at a lower cost.