This 5-pack spa filter is the perfect replacement for your Watkins 31489, Pleatco PWK30, or Filbur FC-3915 filter cartridges. With a filtration area of 30 sq. ft., it effectively removes dirt, oil, and other impurities from your hot tubs, spa, above ground pools, or in-ground pools.

Made with trilobal filtration fabric, this filter is easy to clean and compatible with salt water. Its top/bottom opening measures 1 15/16”, while its length and outside diameter are 10 1/2” and 5 7/8”, respectively. Suitable for a unit quantity of 5, this filter features easy installation and is made in China. Buy now and experience a cleaner and clearer water in your pool or spa.