1. Prefilter with 5 micron spun with Antiscallant with P.P. Housing.2. Prefilter with Granuals Activated Carbon Cylinder with P.P. Housing.3. Prefilter wound with P.P. Housing.4. Auto Flushing System.5. Booster pressure pump.6. Membranes FS-TFC, Made in U.S.A.7. Post carbon (Taste conditioner) .8. Skid made in S.S.9. OPTIONAL : Water Level Sensor to attach with Water Cooler.