Pleatco: PTL35P4-4 | Unicel: 4CH-35 | Filbur: FC-0161 • Diameter: 4 3/4" • Length: 15" • Top: Handle • Bottom: 1 1/2" MPT Threaded • Filter Area: 35 sq ft • Filter Material: reemay (3 oz/yard) Alternate Filter Names: 31382 | 6540-486 | 17-175-1785 | 090164443508 | PTL35P | PTL 35 | PTL35-4 W/PAD AD | PTL35 W/ PAD | PTL35P-4 Used in pools / spas made by: Hot Spot Spas | Hot Springs Spas | Sundance Spas | Sweetwater Spas | Watkins Mfg. and other