Oxygen concentrator / Condenser works perfect like new. Invacare is the best most reliable oxygen company. Will come with extra filters. Can deliver within reason. Can also ship.
This concentrator is for use between .5 liters and 5 liters of oxygen. If ad is still up it's still available. Have purity checker will show you good purity.
Asking 375$ if ad is still up it's still available. Leave your number for faster response otherwise I'll get back to you soon as I can. Be well.