Improves the quality of your water. The filter cartridge is mounted in the filter pump and catches the excess dust, dirt and grime to optimise the performance of the pump and ensure clean and safe water. Suitable for use with Dellonda swimming pool model DL18/DL21 or any pump that is compatible with the following sizes: Diameter - 106mm, Length - 136mm, Top Hole Diameter 55mm, Bottom Hole Diameter 136mm Easy installation as no tools required, just remove the old filter and replace with the new. Easy clean - Remove and wash the filter cartridge under a garden hose to remove loose particles from the filter's fabric. For optimum cleaning and extended filter life, use in conjunction with Dellonda DL56, Cartridge Cleaner Filtration Capacity - 530 Gal per hour. It is suggested to replace the filter cartridge with a new one every 3-4 weeks
