HF-STR3-300S7-SET Advanced Pool Filter Cartridge Inner and Outer 21" Set - Replacement for 300 Sq. Ft. Sta-Rite 25021-0200S & 25022-0201S System 3 S7M120 Set hot tub care Designed for Rainbow chemical feeders

Designed for Rainbow chemical feeders and IntelliChem controllers

Impeller Diameter OD: 4-7/8"

the Blue Protective Sheet shields your solar cover reel when the pool cover isn’t in use

it reestablishes reliable skimmer operation quickly

Great for collectors and Destiny fans: a standout centerpiece that sparks conversations and display interest

HF-STR3-300S7-SET Advanced Pool Filter Cartridge Inner and Outer 21" Set - Replacement for 300 Sq. Ft. Sta-Rite 25021-0200S & 25022-0201S System 3 S7M120 Set hot tub care Designed for Rainbow chemical feedersHF STR3 300S7 SET Premium Cartridge Replacement Intro The HF STR3 300S7 SET from Hurricane Pool Filters is a complete inner and outer cartridge replacement engineered for Sta Rite System 3 S7M120 pools and spas. This 300 sq ft kit combines a 24 inch inner cartridge with a 18 inch outer cartridge, delivering a total of 300 sq ft of filtration media. Built to tight tolerances for a seamless, plug and play fit, it restores peak filtration performance and