Order 3 years of RO replacment filters and maintenance kit and enjoy big discount with this value pack. 

For Model:  RO155

Package includes: three sets of FK-3, one 3150 membrane, and one MK800 maintenance kit.  

1st stage:  high capacity, multi-layer 5 micron sediment filter, to remove sediment, rust, sand, (replace every 6-12 months)

2nd stage:  high capacity carbon filter, carbon block, coconut shell activated carbon removes chlorine, taste & odor (replace every 12 months)  * We have modified the filter from granular to carbon block for higher performance.

3rd stage:  high capacity carbon filter, carbon block, coconut shell activated carbon further removing chlorine to ensure 100% removal of chlorine (replace every 12 months) * We have modified the filter from granular to carbon block for higher performance.

4th stage:  high performance membrane filter. This is a TFC type membrane with capacity of producing 150 gallon per day. High rejection membrane made by US MEMBRANE it removes 95% to 98% of all chemical, dissolved solids in tap water. (replace every 2 to 3 years) MADE IN USA

Maintenance kit: The maintenance kit includes: automatic shut off valve, flow restrictor, and check valve. Maintenance kit should be replaced regularly to maintain optimal operating condition and to prolong the life of the membrane filter.