hey everyone, I have been really bad shape in the hospital for 15 days, but sick 20 days before being in the hospital in progressive care unit. So today I’m going home or I was using 2 m of oxygen. I’m going home with five and I’m OK with that. But what I would like to know is is there anybody who makes a 5 m continuous flow portable oxygen concentrator. If so, who cause I would rather carry one of those then push the big green tanks. They have some questions for those tanks..