?x?x.50" E1 Series Electrostatic Filter (Between 1-50 sq. in.)E1SS050050 $59.04 SKU: E1SS050050 Back $59.04 Quantity -+ Add to Cart Details ?x?x.50" E1 Series Electrostatic Filter (Between 1-50 sq. in.) DetailsBackDetails?x?x.50" E1 Series Electrostatic Filter (Between 1-50 sq. in.)See MoreSee Less