The 3M Cuno 05-731 accepts the following water filter cartridge replacements
The 3M CUNO CoolerMate RO Drinking Water System 05-731 is a three stage water filtration system that includes a sediment/carbon prefilter, a reverse osmosis membrane, and a block carbon postfilter. The 3M Cuno Water Factory CoolerMATE CMRO-3TFC RO System utilizes its triple cartridge filtration to reduce a variety of contaminants from your drinking water, including lead, cysts, barium, arsenic, copper, dissolved solids, radium 226/228, turbidity, fluoride, cadmium, selenium, and chromium. This RO water filter system offers a quick-change cartridge style for no-hassle filter changes.
3M CUNO CoolerMate RO Drinking Water System 05-731 specifications: