Our greenhouse is 96' x 30' with 10' gutter height. We have hard twin wall poly on the sides and 6 mil double poly layers on top. We have a propane heater for the winter months. Here are a few pics of our setup, and feel free to call Todd 512-670-6070 if you have any questions regarding how we operate the greenhouse.
We collect Rainwater!! We now have 35000 gallons of tanks and use the extra for our house-its awesome!