Unicel 7CH-975 | 52 sq ft Dimension One Filter Type_Spa Elixir Unicel 4CH-925 Filter Cartridge

Unicel 4CH-925 Filter Cartridge

so ordering by "75 square feet" alone can get you a filter that doesn't seat correctly

A compact cartridge is serving a smaller body of water

There is also a convenient chart for ideal food temperatures

Astoria Bay Pellet Insert

Unicel 7CH-975 | 52 sq ft Dimension One Filter Type_Spa Elixir Unicel 4CH-925 Filter CartridgeThe Unicel 7CH 975 is a top load spa filter cartridge delivering 52 square feet of filtration across 216 pleats of Reemay 2033 polyester media. Built to meet or exceed OEM specifications, it's the replacement cartridge for Dimension One Spas, taking the place of OEM part 1561 12. Filtration is the quiet backbone of clean spa water. Every soak leaves behind body oils, lotions, hair, and fine debris, and the cartridge is what removes all of it before it