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The Active Brush works on the following Dolphin models: Supreme M4
maintenance-friendly design
most concentrated phosphate control product available in the aquatics market
screw length
Keeps knob performance stable: reduces play and misalignment that can affect filter pressure
HF-HT-100-01 Premium Pool Filter Cartridge For HydroTools Sure Flo 100 water testing strips The Active Brush works onHF HT 100 01 Premium Pool Filter Cartridge for HydroTools Sure Flo 100 Intro The HF HT 100 01 is a direct replacement for HYDROTOOLS 77100 used in the SURE FLO 100 Sq Ft Cleaner System (model 76101). Manufactured in the USA, it features Hurricane Filters exclusive turquoise end caps and a tight tolerance build designed to fit the 32" x 7" cartridge footprint exactly, ensuring reliable filtration and easy swap out for ongoing pool cleanliness. Features
