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

For Model:  RO6ALK 

Package includes: three sets of FK-4, three Alkaline, one 385 membrane, and one MK550 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 75-85 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

5th stage inline alkaline filter with clear housing.Adding Calcium and Magnesium minerals back to the water after RO process, so the pH level ranges between 8.5 to 9.5 (replace every 12 months)  

6th stage: Final stage taste and odor removal filter. Inline carbon filter, granular activated carbon, coconut carbon, improves taste or water  (replace every 12 months)

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.