APC APCCECO3300 Filter Catridge Kit w/ Manifold

ECO3-300 Filter Catridge Kit with Manifold ECO3-300. Kit includes: FC-ECO3-301 100 sq.ft. cartridge 8-3/4" x 23"FC-ECO3-302 200 sq.ft. cartridge 15" x 19-1/2"FC-ECO3-303 Retrofit Manifold (APC Brand Manufactured by ).