This Unicel hot tub filter replaces the Pleatco PRB35-IN, Master Deluxe M40353 and Filbur FC-2385. 

Use a genuine Unicel brand hot tub filter to keep your hot tub water sparkling clean and beautiful. Made with Reemay filter media, the genuine Unicel brand hot tub filters are durable and effective at capturing the smallest of debris making it easier to take care of your hot tub water. Genuine Unicel hot tub replacement filters are available in a variety of sizes and built to OEM specifications, you’re sure to get a reliable hot tub filter that fits your hot tub perfectly. Use this replacement filter to replace your worn or damaged hot tub filter or as a back up to maximize the time between filter changes. Easy to install, the genuine Unicel replacement filter delivers OEM quality performance at a great price.

Manufacturers who use the C-4335:

Artesian Spas - Camilla & more, Aber Hot Tubs, Belize Spas, Bullfrog Spas, Caldera Spas, Clearwater Spas, Coast Mountain Spas, Columbia Spas, Crystal Waters Spas, Custom Molded Products, Emerald Spas, Four Winds Spas, Great Lakes Home & Resort, Gulf Coast Spas, Hawkeye Spas, Hydropool Industries, Hydro Spa, Infinity Spas-TN, Jacuzzi, Leisure Bay Manufacturing, Maax Spas, Moose Mountain Spas, Orca Bay Spas, Pacific Spas by Aber, Pentair Pool Products -Rainbow Plastics, Phoenix Spas, Premium Leisure, Rec Warehouse, Royal Spas, Strong Industries, Sun Coast Spas, Sun Ray Spas, Sundance Spas, Sunrise Spas, Thermo Spas of Connecticut - Concord & more, Vita Spas, Waterway Plastics, Wind River Spas and more.

Also known by these other OEM part numbers:

• 03FIL1300

• 17-2482

• 25393

• 303557

• 817-3501

• R173431

• 6000-136

• 3501

• 74148