General description Efficient filtration: installed inside the filtration pump, it captures dirt and debris, ensuring clean, fresh water. It also prevents dirt from entering the pump and heater, effectively extending their lifespan. For optimal efficiency, it is recommended to clean the cartridge weekly and replace it every month or earlier. Technical specifications Compatible with Type A and C filter pumps Fits models: 58603, 58604, 56637, 56638, 56635 Other information The data is all measured manually; please allow 1-3cm error due to differences in light and display. There may be some color differences; please refer to the actual item received.