Built upon a legacy of reliable, field-proven concentrator models, the DeVilbiss 5 Liter Oxygen Concentrator was updated with enhanced quality, durability, performance and simplicity in mind. Made in the USA, this robust oxygen concentrator offers just the right balance of cool and quiet. The simplified, two-piece cabinet design allows for 15% typical sound quality improvement and an improved cooling process. Paired with proven, exclusive DeVilbiss Turn-Down Technology, these improvements minimize wear on internal components and increase the life expectancy of the unit. The concentrator is easy to assemble and disassemble, and it requires no maintenance for two years. Exclusive DeVilbiss Oxygen Sensing Device standard on every unit increasing accuracy and reliability for longer service intervalsNoticeably quiet operation; 15% typical sound quality improvementReadily accessible patient controls and protected cannula fittingRecessed humidifier nook prevents damageEasy to assemble/disassemble two-piece cabinet for ease of maintenanceLockable flow meterConvenient top and side handles for easy transportAccommodates up to a 50-foot cannula.