Replaces popular brand part numbers:

• Unicel 4CH-21
• Pleatco PTL18P4
• Filbur  FC-0121

Features:

• 18 sq. ft. of high-quality Reemay® Filtration Fabric
• Expansive Flow™ core
• Antimicrobial end caps

Alternative filter names: 20245-238, SD-00845, SD-00821, SD-00838, 17-175-1025, 090164187006, PTL18P, PTL 18, PSN50 W/ PAD AD, PTL18 W/ PAD, PVT-25N, PA17 (PAD OPT), PA13, PSI18, PTL18P-4, PTL18P4-4

Used in pools/spas made by: Alcove, Atera, DM Industries, Dream Maker Spas, Maax Spas of AZ, Pageant Spas, Saratoga Spas, Vita Spas & other manufacturers

By Guardian Filtration Products • 4H8-158

Length: 8"
Diameter: 4-5/8"
Top: Handle
Bottom: 1 1/2" MPT threaded