Clearwater 2 x B140's Series (Model B400) Bayonet Style cell** Generic Cell With 4 Anodes Specifications: 30 amp, 7 plate, 120mm/4.72 inches US models are all screw on C-series except for spa Princess. Cells come with cap and O ring. Cells are manufactured with solid plates. Salt water Chlorinator Cell Replacement Solid plate design means it is easier to clean and maintain. Calcium will not get stuck in the mesh and is easily rinsed from sold plates. 2 year full warranty.