This Maytronics Dolphin™ 99954302-ASSY Filter Bag for DX4 is a reliable replacement part, designed to seamlessly intergrate with the original pool cleaning system. The filter bag traps and contains unwanted debris, ensuring full pool cleaner operation. Maytronics pool cleaners help keep your pool healthy and clean, which is of the utmost importance. Ensure that your pool cleaner is running as cleanly as possible with this certified genuine part.