Unicel

OD 4-15/16", Length 6-5/8", Top end cap 2-1/8", Bottom end cap 2-1/8", Filter model Rainbow DSF-50

50 Sq Ft, OD 4-15/16", Length 13-5/16", Top end cap 2-1/8" open, Bottom End Cap 2-1/8" open

25 Sq Ft, OD 5-11/16", Length 10-3/8"

25 Sq Ft, OD 7", Length 9-13/16", Top end cap 3" open with molded gasket, Bottom end cap 3" open with molded gasket, Filter model Hayward CX250-RE