Stage 1: 5 microns PP fiber cartridge Stage 2: Granule activated carbon cartridge(coconut shell) Stage 3: 1 micron PP fiber cartridge Stage 4: 50G/day RO membrane Stage 5: Post- activated carbon cartridge Under counter/ wall type Membrane: TFC 50 GPD Water pressure: 0.1-0.3MPa Environmental temperature: 5-40¡æ Water Storage Tank: 3.2 Gallon Booster Pump with 220V, 50Hz transformer. Carton box.