Reverse Osmosis System5Stage with big o-ring housingModel No: RO-50G-3Deciptions:-- Three white double O-ring housing-- Sediment filter (PP-10-2)-- Granular active carbon filter (UDF-4)-- Carbon block filter (CTO-10-4)-- RO membrane-- Post activated carbon-- Capacity: 50G/75G/100G pump-- Four-way va......