Built upon a legacy of reliable, field-proven concentrator models, the DeVilbiss 5 Liter Oxygen Concentrators are designed with enhanced quality, durability, performance and simplicity in mind. Assembled in the USA, the DeVilbiss 5 liter concentrators are robust, state of the art oxygen systems that offer the right balance of cool and quiet performance. With improved reliability and reduced operational costs, the 5 liter concentrator is perfect for your patients and the right investment for your business.