Full set of 5 Replacement GTI,  Aquasky ROT-14,  Aquasky rot-6, Aquasky rot-10,  PA-E RO reverse osmosis replacement filters original organic cellulose.
5 stage commercial reverse osmosis, it include 4 filters filters and a 100 gallons per day RO 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 aquasky RO systems can last aroumd 8 To 12 months between changes.
Only the original organic RO membranes can last as long as 5 years Stage
 
stage 1- 
Sediment filter is the first filter installed in all reverse osmosis water filters systeme . The main function of a sediment filter is to remove large and fine particles from a drinking water, such as sand, dirt, silt, and rust particles. Removal of such particles allows for a better performance of all the following filters, such as carbon block or GAC filters.
 
Micron rating: 5 micron.
Dimensions: (20")
Lifetime: please replace every year, depending on the water quality. This filter is wrapped and sealed and meets NSF Standards and Regulations. Filter will fit any residential reverse osmosis unit that features standard 20" commeercaal reverse osmosis system ( look for compatible systems list )
 
Stage 2-
Original organic activated carbon GAC filter are well-known for their highly efficient reduction of chlorine taste and odor Taste and odors 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: (20")
Lifetime: please replace every year, depending on the water quality.
This filter is wrapped and sealed and meets NSF Standards and Regulations. Filter will fit any residential reverse smosis unit that features standard 20" filter housing ( look for compatible systems list )
 
stage 3- 
Organic original Activated Carbon Block Filter are made of fine coconut shell carbon Remove odors and tastes of many organic compounds and chlorine especially. Because this filters are made of a packed carbon (forming a cylinder block), they offer a much finer filtration of suspended particles and dirt.
Micron rating: 5 Micron.
Dimensions: ( 20")
Lifetime: please replace every year, depending on the water quality. This filter is wrapped and sealed and meets NSF standards and regulations. Filter will fit any residential reverse osmosis unit that features standard 20” filter housing ( look for compatible systems list )
 
Stage 4 & 5-
2 Original organic 100 GPD each certified thin film TFC Membrane is the main component of  reverse osmosis unit. Made with 100% Organic fine thin film flat sheet 99% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water. Only the original organic  membrane has The micron rating of a thin film less than 1/10000th of a Micron which is 620,000 times finer than A human hair, 2,500 times smaller than bacteria and 20 Times smaller than any virus.
 
Product Features: 100 Gallons Per Day (15.8 -19.6 Liters per Hour) Capacity 99%
stabilized salt rejection (minimum rejection 97%)
NSF/ANSI Standard 58 listed Operating Conditions Performance specifications based on 500 ppm tap water.
50psi (0.35 MPa) applied pressure.
77°F (25°C) feed water temperature.
feed water pH 7-8 and 15% recovery.
Element permeate flow may vary ± 15%.
Maximum operation pressure: 125 psi (0.86 MPa)
Maximum feed flow rate: 2 gpm
Maximum operating temperature: 113° F (45° C)
Maximum feed water turbidity: 1 NTU
Maximum feed water SDI (15min): 5
Chlorine tolerance: 0
Feed water pH range: 2-11
Minimum brine flow to permeate flow ratio: 4:1
 
This filter is wrapped and sealed and meets NSF Standards and Regulations.