?x?x.50" E1 Series Electrostatic Filter (Between 301-350 sq. in.)E1SS050350 $81.04 SKU: E1SS050350 Back $81.04 Quantity -+ Add to Cart Details ?x?x.50" E1 Series Electrostatic Filter (Between 301-350 sq. in.) DetailsBackDetails?x?x.50" E1 Series Electrostatic Filter (Between 301-350 sq. in.)See MoreSee Less