While many starter greenhouses are a bit flimsy, the Exaco Tulip House is ready for deployment to the harshest climes. It provides 50 square feet of interior growing space. The sloped wall design allows snow to slide off, and allows wind to blow over the top. You"ll receive a foundation frame for a stable base, a roof vent, and a 23 x 73 inch sliding door. The walls and roof are composed of 4 mm thick twin-wall polycarbonate, for superior durability and insulation. Framework is finished in a tasteful dark green. The gothic vaulted roof provides 7 feet 2 inches of headroom at the center if the unit is installed in the ground. If mounted on a deck, headroom will be increased to 7 feet 6 inches. This can be shipped through UPS or FedEx and arrives in 4 cartons. Made in China. About Exaco USA Exaco USA Ltd. is a family-owned company based in Austin, Texas, that introduced the Exomixer paint mixing blade to the U.S. market in the late 1980s. The company has been a vendor to major home center chains and national distributors for 17 years, providing a variety of innovative products for your yard and outdoor living. * 50 square foot greenhouse * Sloped roof handles snow and rain * Includes foundation, roof vent, and sliding door * Aluminum frame with twin-wall polycarbonate walls * Over 7 feet high * Base measures 6 feet 10 in. x 7 feet 3 in.