Set Of 3 original organic replacement filters cartridges standard size all 5 stage under sink reverse osmosis water systems.
 
 
5 Stage Aquasky under sink reverse osmosis water systems include 3 pre and post-filters and a membrane that must be replaced periodically. The different filters represent the different stages that the water goes through while being purified. Generally - Pre-Filters and Post-Filters in RO systems can last around 8 To 12 months between changes.100% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water, the main stage in this system is the RO membrane. All of the other replacement filters serve and protect that membrane. If the pre-filters fail to work due to poor quality, your RO membrane will not give you a 0100% reduction rate. 
 
             Stage 1 - Pre-Membrane reverse osmosis sediment filters
 High-Grade 5-micron high-capacity sediment filter 
Remove larger particles & suspended matter such as dirt, silt, rust, and sand from water.   
Protects and extends the life of the membrane and system.
Recommend replacement every 8-12 months, varies depending on the water source quality   
Standard Size Aquasky rot-4 water filters 24-3/4" / 10" 5.5 /15-( 97%)
Stage (1) Pre-membrane
Stage 2-
Original organic activated carbon GAC filters are well-known for their highly efficient reduction of chlorine taste and odour.
Taste and odours of many organic chemicals and volatile organic compounds.
All GAC filters are made with organic, high-quality coconut shell carbon.
Micron rating: 5 Micron.
Dimensions: ( DXI 8.2 X 1/4 - 7/8") x 2.5"
Lifetime: please replace every year, depending on the water quality.

This filter is wrapped and sealed and meets NSF Standards and Regulations. The filter will fit any residential reverse osmosis unit that features standard 10" filter housing ( look for compatible systems list )
 Stage 3:- 
 Original organic CTO coconut shell carbon block filter
Forcefully remove pesticide residues in water, water pollution odour of ozone, chlorine removal of residual heavy metals, bacteria, sterilization.
Standard Size 24-3/4" / 10" 5.5 /15-( 97%)
Recommend replacement every 8 To 12 months.
Protects and extends the life of the membrane and system.
Stage (2) & (3) Pre-membrane
Aquasky Rot-4 reverse osmosis replacement filters cartridges.
Tankpro Pro 3.2 & 4.4 reverse osmosis replacement filters cartridges.
PA-E reverse osmosis Ro-132 replacement filters cartridges.