Pentair Rainbow Dynamic 50 Spa Filter Cartridge. Also replaces Unicel C-4950, Pleatco PRB50-IN, Filbur FC-2390 | XLS-408 1PACK by Excel Filters Pleatco PA55 Hayward SwimClear C4020 PA100N PA100N-4

Hayward SwimClear C4020 PA100N PA100N-4 PA100N-PAK4 PA106 PA106-M PA106-PAK4 PA112 PA112-4 PC-6430 PC-6445 Pleatco PA100N Pleatco PA100N-M Pleatco PA106 Pleatco PA106  Pleatco PA106-4 Pleatco PA112 Pleatco PA112-M Pure N Clean PC-1226 Pure N Clean PC-1270 SD-00366 SD-01009 Unicel C-7487 Unicel C-7488 XLS-722 XLS-719 875

and convert your system to a much more manageable cartridge set

Clean & Clear Plus 420 and Waterway 425

Pleatco PCC60

Hayward CX-750

Pentair Rainbow Dynamic 50 Spa Filter Cartridge. Also replaces Unicel C-4950, Pleatco PRB50-IN, Filbur FC-2390 | XLS-408 1PACK by Excel Filters Pleatco PA55 Hayward SwimClear C4020 PA100N PA100N-4compatible alternative pool and hot tub spa replacement for Rainbow Pentair Dynamic 50, Pleatco PRB50, and Unicel C 4950 jacuzzi cartridges. SP PS 2390 is designed to fit spas by Pentair Rainbow, Waterway Plastics, and Viking Spas. Important Specifications: Diameter: 4 15 16" (4. 9375") Length: 13 5 16" (13. 3125") Top Hole: 2 1 8" (2. 125") Bottom Hole: 2 1 8" (2. 125") Top Style: Open Bottom Style: Open Media Area: 50 sqft Weight: 3 oz Compatible