?x?x.50" E1 Series Electrostatic Filter (Between 501-550 sq. in.)E1SS050550 $90.64 SKU: E1SS050550 Back $90.64 Quantity -+ Add to Cart Details ?x?x.50" E1 Series Electrostatic Filter (Between 501-550 sq. in.) DetailsBackDetails?x?x.50" E1 Series Electrostatic Filter (Between 501-550 sq. in.)See MoreSee Less