The DeVilbiss 525KS 5L oxygen unit provides a steady stream of therapeutic air for home care. This machine is notably suited for people requiring a gentle flow of up to 5 L per minute . Reviewers https://devilbiss525ks5loxygenco414021.ageeksblog.com/40191957/devilbiss-525ks-5l-oxygen-concentrator-a-comprehensive-review