Description

20051-R 4 x 21″ Reverse Osmosis Membrane. This 21″ RO Membrane is designed to operate at extremely low operating pressures. As a result making it the perfect choice for the window cleaning professional. Consider changing your RO membrane when it has begun to remove less than 80% of the impurities in the water. The fewer impurities the RO can remove the more you will spend on DI filter replacements.