I ordered 2 of the Zalie greenhouses to over-winter my plants. Arrived well packed and in good shape. I was impressed with how well the instructions were presented and had no trouble assembling the greenhouses. All parts were included, well labeled and went together perfectly. I was able to assemble the greenhouses by myself except needed another person to help me put the walls together and lift the roof on.  The folding shelves are a nice touch and the automatic exhaust fan cools the greenhouse by 5 to 10 degrees on a warm day. I used 3/8" x 4" wedge anchors to secure the greenhouses to my concrete slab and would recommend using a silicon sealer under the metal roof trim. Plan on using an electric space heater during extended cold/cloudy periods this winter. Satisfied with everything about the Zalie Greenhouse.