... 1 stage water maker. or with same capacity output , SW-IIS would be double or higher cost than 1 stage ... /l)<50<50<50freshwater capacity1000 LPD2000 LPD3000 LPDPurewater capacity100 GPD200GPD300GPDmembrane 2.5" * 40" * 12.5" * 40" * 22.5" * 40" * 3membraneCSM ... high-pressure pump of corrosion-resistant, ultra reliable, high-performance.2,Small size, low weight, easy to operating, installation and ...