Small 8 x 10. This is my first greenhouse ever. I have zero experience with one. My wife asked me to start small and work my way up. She had on her good robe, so I said yes. I have visions of a really big one next year. Saving every penny for my grande. I almost finished it last night. 3 more hours of work and It will be up. Moving the tank and grow bed in tonight. I am going to build a solar heating system next weekend using a hot water circulation thing to help keep heating costs down. I will post pictures soon and ask for advise on my system. Thanks for the kind words.