HF7304 Advanced Hurricane Spa Filter Cartridge Replacement for Unicel C7304 Ocean Illumination ready-to-run package: An all-in-one system

ready-to-run package: An all-in-one system minimizes compatibility concerns and speeds up installation so you can start filtering quickly

and a T-Gasket on the unions delivers a dependable

Easy dosing—simple instructions on a 1-quart bottle for precise

it distributes evenly over time and requires just one application per month

hands-free pool upkeep

HF7304 Advanced Hurricane Spa Filter Cartridge Replacement for Unicel C7304 Ocean Illumination ready-to-run package: An all-in-one systemHF7304 Advanced Hurricane Spa Filter Cartridge Replacement for Unicel C7304 Intro HF7304 Advanced Hurricane Spa Filter Cartridge is a precise replacement for Unicel C 7304 and compatible models, delivering dependable filtration for residential spas. It features exclusive turquoise end caps and is manufactured in the USA for consistent quality. With a length of 13. 4375 inches and a 7 inch outer diameter, plus open top and bottom measurements of 3. 5