Unicel S-7172 Replacement Filter Disc for Sta-Rite System 2 PLM Series | 17" Test Reagents confirm your existing cartridge is

confirm your existing cartridge is stamped CX750RE or matches the dimensions above before ordering

and vinyl pool surfaces

woven material that's so lightweight you can easily carry even under one arm

When replacing the union kit on a Quad D

Unicel S-7172 Replacement Filter Disc for Sta-Rite System 2 PLM Series | 17" Test Reagents confirm your existing cartridge isThis Unicel S 7172 filter disc is a direct replacement for the media used in Sta Rite System 2 Modular DE filter models PLM100, PLM150, PLM200, and PLM300. Manufactured by Unicel, a trusted leader in pool filter technology, this high quality aftermarket replacement delivers reliable filtration performance for residential and commercial swimming pools. IMPORTANT: FILTER SYSTEM VERIFICATION This filter disc is designed specifically for Sta Rite System 2