DeVilbiss home concentrator 5 LPM - $275 (Holland Patent)

Very low hours if you know about these has 1578hrs. Equals about 60 days of use. Has had its filters changed, which didn't need it but I changed it anyways when I got it. runs absolutely beautiful and quiet no vibrating you almost can't hear it running, was kept in the house for a backup. Good to keep at a camp or somewhere else or as a backup like I did or use it all the time at home.But now my wife needs 8 LPM, has been covered up with the garbage bag to keep it clean. $275 firm cash only Has only been used 2 months text me, I do not email or call me because I won't answer the phone until you text me and I know you're real and not a scammer