Guardian Filtration Products 2 Pack Spa Filter fITS: Unicel 5CH-402, Pleatco PJW40SC-F2M,FC-2811 Jacuzzi Whirlpool Made in The USA South Pacific, Sundance, DEL SOL Pool 9 7/8'' length 40 sq ft jacuzzi diameter 5 1/4'' 2'' MPT fine pipe threaded