Keep your pool water clear and clean with a Filter Cartridge (Type I) by Bestway®. This replacement cartridge measures 3.1''x3.5'' and is designed for 330 gallon per hour (110-120V) filter pumps. They are easy to clean and sift dirt and debris out of your pool with your pump. Bestway® recommends replacing them every 2 weeks for best results. Size: 3.1" x 3.5" Easy to clean Replacement for 330 gal. filter pumps Contents: 2 filter cartridges
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