By Brand:   Select Filter Brand Aber Hot Accent Acryx Maax Advanced Alps American Apollo Aqua Mystic Aqua Tech Arcadia Arizona Pacific Artesian Baja Belize Blue Falls Blue Pacific Blue Ridge Bullfrog Cal Spas Catalina Charisma Clearwater Clipper Coast Coast Moutain Coleman Columbia Crystal Waters Dakota Diamond Black Dimension One Discovery DreamMaker Dynamic Dynasty Edge Emerald Endless Fox Wal Pak Freedom Freeflow Freestyle Futura Garden Gatsby Great Lakes Gulf Coast H20 H2O Haven Hawkeye Heartland Hollibaugh Home Hot Tubs Hot Spot Hot Springs Hydro Hydropool Icon Infinity Islander Jacuzzi LA Legend Leisure Bay Lowes Maax Marquis Master Midwest Millennium Moonwater Moose Mountain Morgan Mountain Stream Nordic Orca Bay Pacific PDC Pentair Pool Phoenix Rec Warehouse Rising Dragon River Valley Rocky Mountain Royal Safari Santa Barbara Seahorse Sequoia Design Signature Softsider Sonoma Southwest Spa Crest SpaBery Streamline Strong Strong Industries Sun Coast Sun Ray Sunbelt Sundance Sunrise Sunset Superior Thermo Tuff US Toolilng US Tooling Viking Vita Waterway White Springs Wind River Zone   By Dimensions:   Pick Diameter Range 3" - 4" D 5" - 6" D 7" - 8" D 9"+ D   By Cal Spas #:     By Filbur #:     By Unicel #:     By Pleatco #:     By Thread Type:   Pick Threaded Type 1 1/2" Female SAE 1 1/2" MPT 1 1/2" SAE 2 3/4" beveled edge 2" MPT 2" SAE Female Female SAE Thread Male Open Special Lock

PGS25P4   Diameter: 4 5/8" Length: 9 3/4" Size: 25 Sq.Ft. Thread: 1 1/2" MPT 1 reviews | add review Premium replacement for: Pleatco: PGS25P4 Filbur: FC-0131 Unicel: 4CH-24   Price: $24.48 FIL25-45D8H2MFT   Diameter: 4 3/4" Length: 8 1/16" Size: 40 Sq.Ft. Thread: 2" MPT 0 reviews | add review Premium replacement for: Pleatco: PMA20-F2M   Price: $67.65 FIL75-5D145H2OE-3   Diameter: 5 5.25" Length: 2 14.5" Size: 75 Sq.Ft. Thread: Open 0 reviews | add review Premium replacement for: Pleatco: FIL75-5D145H2OE-3 Filbur: FIL11100233 Unicel:  C-5374   Price: $54.21 FIL50-5D13H2MFT-3   Diameter: 5 " Length: 12 " Size: 50 Sq.Ft. Thread: 2" MPT 0 reviews | add review Premium replacement for: Pleatco: FIL50-5D13H2MFT-3 Filbur: fil11100204 Unicel:  5CH-352   Price: $25.04 FIL50-5D13H15FCT-3   Diameter: 5 1.50" Length: 13 " Size: 50 Sq.Ft. Thread: Female 0 reviews | add review Premium replacement for: Pleatco: FIL50-5D13H15FCT-3 Filbur: FIL11100208   Price: $51.50 FIL75-5D17H15FCT-3   Diameter: 5 2" Length: 16 " Size: 75 Sq.Ft. Thread: Female SAE Thread 0 reviews | add review Premium replacement for: Pleatco: FIL75-5D17H15FCT-3 Filbur: FIL11100209   Price: $27.28 FIL75-7D155H2MCT-3   Diameter: 7 2" Length: 15 " Size: 75 Sq.Ft. Thread: 2" MPT 0 reviews | add review Premium replacement for: Pleatco: FIL75-7D155H2MCT-3 Filbur: FIL11700016   Price: $27.28 1 ... Last

Why your hot tub filter is important
		Enjoy a warm, bubbly hot tub with crystal clear water that’s ready to be enjoyed whenever you want. Ensure your spa water remains clean and free of debris with a new spa filter. Old filters can damage spas by causing pumps to work overtime and will cause spa water quality to decline profusely. When it comes to performance, the filtration system is at the heart of your spa’s function. Optimize your spa’s performance and water quality with a Cal Spas replacement filter. Bio-Clean™ Antimicrobial Filters Ban harmful microbes from your filter. Cal Spas Bio-Clean™ spa filters are infused with antimicrobial technology during the manufacturing process that becomes part of the molecular structure. With proper maintenance, Bio-Clean™ filters will have an added level of defense that keeps your filter clean and extend the functional lifespan.

HOW TO MEASURE YOUR SPA FILTER CARTRIDGES:

To ensure you order the correct replacement filter, Cal Spas has developed an easy measuring guide for all filters. Follow the directions below to replace your existing filter with a diligent spa filter which will last months longer than competitors.

KEEPING YOUR SPA WATER CLEAN: