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The Unicel C-6433 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel C-6433 Comp. Watkins 33 Pool Water Filter has an outer diameter of 6 inches, with a length of 9 inches. This Unicel pool filter has an open top with a diameter of 1 5/8 inches, and an open bottom with a diameter of 1 9/10 inches and with slots. This Unicel C-6433 filter contains 33 square feet of filter media.