This is for a home oxygen concentrator used that has been tested and refurbished. I have only a few left. We are open Monday through Friday 8:30 to 5:00. You can call the office. 801-270-8440 for additional questions. after hours or weekends you can call or text this number 801-381-6613. We do deliver as well. I'm also in Vineyard if that is closer for you.