?Replacement Models?This pool spa hot tub filters compatible with intex type B,29005E,59905E,Model 51/52, 520R/530R Filter,Darlly 50152,PIN20,Unicel C-5315,Filbur FC-3752 ?SIZE?Length: 10", Outside Diameter: 5-3/4" Top: 1-7/8" open, Bottom: 1-7/8" open, Filter Area: 15 sq. ft ?Qualified Material?The advanced material of pleated trilobal filtration fabric is utilized. Cutting-edge technologies make the capacity higher than common point-bond fabric. It makes water filtration more thoroughly and service life longer. ?Powerful Filtration Performance?Pool and spa filter cartridge has the function of efficiently locking and wiping leaves, dust, sand, sediment, hair, etc, which provides a clean environment for you and your family to relax in the pool spa and hot tub.