Replaces popular brand part numbers: Unicel C-4335 Filbur FC-2385 Pleatco PRB35-IN Length: 9-1/4"Diameter: 5"Top opening: 2-1/8"Bottom opening: 2-1/8"   Built to meet OEM specifications, the Guardian 409-219 features: 35 sq. ft. of high-quality filtration fabric Exclusive Expansive Flow™ core Alternative filter names: 03FIL1300, 17-2482, 25393, 303557, 817-3501, R173432, 17-3432 , R173431, 17-3431, FL1008, 212320, QUEST, Rainbow Dynamic 35, 4900-35, 17-175-1607, 17-175-1608, 6000-136 APCC7501, Hydro Spa 5460, 090164824109, SD-01243, PRB 35IN3, PRB35-IN-3, DSF-35, PRB35-IN-Z, PRB35-IN, PDC520-AFS   By Guardian Filtration Products • 409-219