Unicel 4CH-21
Unicel 4CH-21 is backordered and will ship as soon as it is back in stock.
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Unicel 4CH-21
Description
Description
Unicel Cartridge 4CH-21
The Unicel 4CH-21 hot tub filter cartridge is know to fit select spa model's by Atera Spas, Dream Maker Spas Cottage Collection pre-2014, Hydro Spas, Maax Spas, Saratoga & Vita Spas and others. Due to the range of models and filter sizes used by these spa manufacturers it's good practice to confirm this filter size is the same as the filter in your actual hot tub model.
Diameter: 4-5/8"
Length: 8"
Top: Molded Cone
Bottom: 1-1/2"MPT
Case Size: 4
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