Arrived at location on 7/9/21 - Spoke to manager on duty. I found that the door wasn't closing properly. I called manufacturer and found this unit doesn't have a door gasket. They put foam tape around the door frame. Will get some and return the next business day. Returned to location on 7/12/21 - Spoke to manager on duty. I placed foam around door frame and tested out. Unit seemed OK. Unit is working at this time.