4-pack of M40751 Master Deluxe hot tub filters. These spa filter cartridges replace Pleatco PRB75, Filbur FC-2395 and Unicel C-4975 type hot tub filters in Canada.
20 1/8" length
top hole inner diameter 2 1/8"
bottom hole inner diameter 2 1/8"
Size: 75 sq.ft.
This item is for a 4-pack of filters. These filters are also sold in single units.