Ultima GREEN RO 4 Stage System (GRO-50-4)

Reverse Osmosis Systems

Ultima GREEN GRO-50-4 4-Stage RO Compatible Replacement Filters

The Ultima GREEN RO 4 Stage system is a high efficiency under sink reverse osmosis system. This system uses three drop-in cartridge pre-filters and an RO membrane. See below for the compatible replacements.

Replacement Filter Info

Sediment Filter (93023) - Replace every 6-12 months or as needed

Carbon Block Filter (OMB934-5M) – Replace every 6-12 months or as needed

RO Membrane TFC 50 GPD (4004424) – Replace every 24 months or as needed

Helpful Filter Information

Not all filters have the same replacement schedule. Replace the RO membrane filter every two years. Replace all other filters every 6-12 months. Help keep your system sanitary by never using filters longer than 12 months, except the RO membrane filter, regardless of how much water you use.