?x?x.50" E1 Series Electrostatic Filter (Between 251-300 sq. in.)E1SS050300 $71.72 SKU: E1SS050300 Back $71.72 Quantity -+ Add to Cart Details ?x?x.50" E1 Series Electrostatic Filter (Between 251-300 sq. in.) DetailsBackDetails?x?x.50" E1 Series Electrostatic Filter (Between 251-300 sq. in.)See MoreSee Less