?x?x.50" Flat Electrostatic Filter (Between 851-900 sq. in.)ECAS050900 $128.40 SKU: ECAS050900 Back $128.40 Quantity -+ Add to Cart Details ?x?x.50" Flat Electrostatic Filter (Between 851-900 sq. in.) DetailsBackDetails?x?x.50" Flat Electrostatic Filter (Between 851-900 sq. in.)See MoreSee Less