D Size Sand and Sun Swimming Pool Filter Cartridge
Brand New!  "D"  Type filter. This filter measures roughly 3 3/4" tall x 4 1/4" in diameter with a 2" diameter hole. Color of filter paper may vary. Price is for one filter.Do you own a 12 foot size or smaller Simple-Set pool? If so, your pool came packaged with Aqua Leisure pump model SA3766. The 500 gallon per hour pump uses one of two filter cartridges, as explained by the filter FAQ on Aqua Leisure's website:Question: I need to replace my filter-pump cartridge. What type of replacement filter cartridge do I need...Answer: For the pump included with pools 12ft. and under, the filter cartridge must be replaced with either an Aqua Leisure Simple-Set? 'Size 1' filter cartridge, or a Sand and Sun 'Size D' filter cartridge.