4-pack of M50353 Master Deluxe hot tub filters. These spa filter cartridges replace Pleatco PMAX50P4 and Unicel 5CH-35 filter models.
5 3/4″ diameter
8 7/16″ length
bottom 1 1/2″ MPT male pipe thread connector (fine thread)
Size: 35 sq.ft.
This item is for a 4-pack of filters. These filters are also sold in single units.