Peaktop Portable Large Greenhouse Outdoor Walk in Grow Garden Plant Growing Green House Hot Tent 12' X 7' X 7' Steel Framework with 6 Windows 2 Doors (Arch Roof, 12'x7'x7') 6 Vents 2 Doors - Excellent ventilation and breathability, ISO 9001:2000 standard certified Zipper Door - Easy to pass in and out, very strong even if in a windy day. And, offers a complete closed space in winter Steel Framework - Made with powder coated steel framework, super strong bearing strength. And, large enough to allow you enter freely, no sense of oppression Overlong Cover - Made with Heavy-duty transparent reinforced polyethylene cover material, UV protection, waterproof & warm inside. Just bury it in the soil, easy but more airtight and secure Shipping & Warranty - All items shipped from our US local warehouse and can be received in 5 days. Also, you can get free replacement parts within 24 months if there is any defective with our items