The DeVilbiss 525 DS is one of the newest additions of home oxygen concentrators. The home unit features an attractive, minimal design that’s less obtrusive in your home. While the design is modern, the 5-liter per minute concentrator features numerous internal components incorporated into the 303 and 515A DeVilbiss concentrators. These components are more than 70% factual that facilitates less maintenance and repairs. This space-saving stationary concentrator provides the highest level of performance, ease of operation and safety.