Compatible with replacement filter cartridges, suitable for all models. Dimensions: diameter 11.5 cm, height 8.6 cm. 2020 updated version Made of high quality materials, durable and practical. Helps remove dirt and ensures clean, fresh water. Keep your pool sparkling clean and clear day after day. Keep your pool water clean and fresh with the help of this high quality replacement filter cartridge. It helps keep the spa clean. The filter cartridge is installed in the filter pump and catches dust as it passes through the system. Prevents dust from entering the pump and heater and extends their lifespan. For maximum efficiency, clean the cartridge weekly and replace it once a month or sooner. They are easy to clean and replace when needed.