Looks good to me. Actually I am looking for a ozone sauna myself. Did you get the generator, concentrator and the sauna for $400.00?! If you did then I am extremely jealous and a bit angry to be honest. I have a feeling it's from the same guy who sold me my O3 - Ozone generator but mine is only a single stage and I paid $350.00. I asked about the sauna but he wanted $250.00 for it and I can't afford that right now. I bought my used O2 concentrator elsewhere for $300.00 but had to buy a pediatric flow meter ($200.00) to get the right concentration of O2/O3. So that's already $550.00 and I still need a sauna.
Could you let me know the source of your purchase? I think the sauna is the missing piece of the puzzle for me if I am to regain my health.