Cryspool MPT-Thread Spa Filter Replaces Watkins 303279(not 303263). FC-2402. Free Flow and Lifesmart Hot Tub Filter. 1 1/2 Finer Thread. 2 Pack

This pool filter is compatible with the following brand and models: Watkins 303279(not 303263) . FC-2402 . Free Flow and Lifesmart Hot Tub Filter . 1 1/2 Finer Thread and some other SPA models. Note: all the manufacturers' name and brands' name are just for reference purposes only . we own an independent brand. Our filters are with even pleats to filter more effectively and reinforced end caps to perform better . as well as strong bands to hold the product in position. It can be cleaned easily and used repeatedly.