I built this almost all by myself. First greenhouse so I'm still figuring out how to do it, what to plant inside and outside. I'm thinking I may need a shade cloth in summer, and will eventually have screen doors on both ends for ventilation. It will be added to my automatic water system also. I bought two vent hinges that open automatically when hot and close when cool. Should I put vents in at the top of the ends? I'm not sure where they'll work the best. I built raised beds because we have terrible river rock ground and lots of weeds, I also have ducks and geese. I live in southern idaho, around 5600 ft, house is 12' by 22'. I am building more for outside growing. We have a sawmill so using scrap wood for beds to save money.