PENTAIR GRO-50 and 2550 ENCAPSULATED membrane Set includes 2 x 5-micron

Set includes 2 x 5-micron carbon filters

Our favorite system for under sink or basement installations

Thin Film Composite Membrane (TFC)

Should be changed every 1-3 years when installed on HARD water

Fits PURA Twist Reverse Osmosis units

PENTAIR GRO-50 and 2550 ENCAPSULATED membrane Set includes 2 x 5-micronFITS PENTAIR 2550 GRO 50 systems Should be changed every 3 5 years. Pentair's GRO integrates a 100% dry membrane to help maximize its lifespan and provide enhanced performance to the end user. The GRO boasts a 50% recovery rate while maintaining a retrofit able design for easy integration. Features and Benefits Double the recovery over standard reverse osmosis elements Rejection performance comparable to standard reverse osmosis elements High