?x?x.50" E1 Series Electrostatic Filter (Between 451-500 sq. in.)E1SS050500 $88.24 SKU: E1SS050500 Back $88.24 Quantity -+ Add to Cart Details ?x?x.50" E1 Series Electrostatic Filter (Between 451-500 sq. in.) DetailsBackDetails?x?x.50" E1 Series Electrostatic Filter (Between 451-500 sq. in.)See MoreSee Less