Cal Spas
We offer over 200 of the most popular replacement filter cartridges on the market, including replacements for Unicel, Filbur, Pleatco, and OEM products. To find your filter by selecting the dimensions below.
Watch the video for advice on how to measure your cartridge.
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showing 1 - 12 of 12 products
413-212 Spa Filter Cartridge
Guardian FiltrationReplaces: Unicel C-4950, Filbur FC-2390, Pleatco PRB50IN
Sale!413-212-M Spa Filter Cartridge
Guardian FiltrationReplaces: Unicel C-4950RA Filbur FC-2390M Pleatco PRB50-IN-M
Sale!414-193 Pool Filter Cartridge
Guardian FiltrationReplaces: Unicel C-4305, Filbur FC-1617, Pleatco PMT50
Sale!423-178 Pool Filter Cartridge
Guardian FiltrationReplaces: Unicel C-4970 Filbur FC-2930 Pleatco PCAL75
$50.99
423-222 Pool Filter Cartridge
Guardian FiltrationReplaces: Unicel C-4995 Filbur FC-2940 Pleatco PCAL100
$50.99
514-223 Pool Filter Cartridge
Guardian FiltrationReplaces: Unicel C-5374 Filbur FC-2971 Pleatco PLBS75
$30.99