SKU # 146-525DS McKesson 5-Liter Compact Concentrator with Oxygen Sensing Device: Compact Design: Measures 13.5" W x 24.5" H x 12" D, 34% smaller than traditional 5-liter units. Oxygen Sensing Device (OSD): Exclusive OSD® standard on every unit for increased accuracy and reliability; allows O2 check every 2 years. Quiet Operation: Noticeably quiet operation for patient comfort. Humidifier Protection: Recessed humidifier nook prevents damage. Turn-Down Technology: Below 2 1/2 LPM flow, system reduces pressure by 35%, lowering stress, temperature, and improving energy efficiency and cup seal life. Lightweight: Weighs 36 lbs for easy portability. Safety Warning: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov Application Oxygen Concentrator Dimensions 13-1/2 W X 12 D X 24-1/2 H Inch Flow Rate 0.5 to 5 LPM Continuous Flow Mode HCPCS E1390 Specifications With Oxygen Sensor, Pressure Relief Valve, 2-Prong Plug, 48 dBa Noise Level, Flame-Retardant Cabinet UNSPSC Code 42271702 Volume 5 Liter Weight 36 lbs. Latex Free Indicator Not Made with Natural Rubber Latex 1 Each/ Each