Unicel C-4305 Hot Tub Filter Cartridge filter clean Each P3 cassette contains 48

Each P3 cassette contains 48 tests

Bottom: 1-1/2" SAE Thread

Choose the Coast Spas Chlorine Starter Kit for reliable performance and superior water quality

cost-saving package

Do not squeeze or wring out

Unicel C-4305 Hot Tub Filter Cartridge filter clean Each P3 cassette contains 48The Unicel C 4305 has been used in a variety of hot tub models and brands over the years, including select Cal Spas and the 1994 Suntub by Sundance Spas. As filter dimensions can vary between spa models, its always best to confirm this cartridge matches the size of your existing filter to ensure proper fit and performance. Specifications: Part Number: C 4305 Diameter: 4 15 16" Length: 14 7 8" Top: 2 1 8" Open Bottom: 2 1 8" Open Media Area: 50 sq. ft.