?x?x.50" E1 Series Electrostatic Filter (Between 351-400 sq. in.)E1SS050400 $83.52 SKU: E1SS050400 Back $83.52 Quantity -+ Add to Cart Details ?x?x.50" E1 Series Electrostatic Filter (Between 351-400 sq. in.) DetailsBackDetails?x?x.50" E1 Series Electrostatic Filter (Between 351-400 sq. in.)See MoreSee Less