The Tulip Greenhouse is an entry level greenhouse kit with a unique look. The design of the sloped walls makes it more durable than other greenhouses, as the walls allow snow to slide off and wind to sweep right over the top. This 7 foot x 7 foot structure gives you 48 square feet of growing space and lots of extras. The dark green frame blends in with the landscape and the 4 mm twin wall polycarbonate walls provide insulation to delicate plants and seedlings. With the sliding door design, it will stay open when you need it and won"t obstruct your workspace. It also eliminates the risk of damage from wind or lawn equipment. The 4 inch C-shaped foundation frame sits on the ground to act as an anchoring system for the greenhouse walls. The 5 Louvre rear window allows air to flow through and the roof window lets hot air escape when it gets too warm. The solar powered exhaust vent also helps to keep your plants from getting too warm on a hot sunny day. Included are two full length shelves; the top shelf measures 12 Inch wide and the bottom shelf measures 24 Inch wide. Actual greenhouse dimensions are 6 feet 8.5 Inch wide, 7 feet 2 Inch long and 7 feet 2 Inch high. Sliding door opening is 23 Inch wide and 73 Inch high. 5 panel Louvre window measures 23 Inch wide and 18 Inch high. Roof window measures 27 Inch wide and 20 Inch high. Top shelf measures 7 Inch long and 12 Inch wide, bottom shelf is 7 Inch long and 24 Inch wide. Assembly time for 2 people is 4-8 hours. Features a 15 year warranty on frame and 10 year warranty on polycarbonate walls. This kit contains everything you need to begin your greenhouse garden the same day.