**FSS Contract 36F79723D0004** Devilbiss Five Liter Compact Oxygen Concentrator is a robust concentrator that offers just the right balance of cool and quiet. It is designed with enhanced quality, durability and simplicity in mind. Patented DeVilbiss Turn-Down Technology minimizes wear on internal components, reduces power consumption by 15% or more and extends the life of the concentrator. Devilbiss Five Liter Oxygen Concentrator requires no maintenance for two years. Two-piece cabinet aids in sound quality improvement.