Yes just starting to be there is a oft above the flat as well. I'm going to have to down size the operation I think the front door of the shop is open all day so there will be fresh air in the shop area to which I was hoping it would be enough, so u think i should have a ac units as well bringing more fresh air in from outside? It's goin to be starting very soon so I need to get things started ill do a running progress with photos