Key Details | Sunhaven 8 x 8 Greenhouse Dimensions: 8' W x 8' L x 7'8" H - 5' 6" sidewalls Frame: Aluminum Color: Brown, Green, or White Covering: 6mm Twinwall Polycarbonate Door(s): 1 Roof Vents: 1 (Automated) End Vents: 0 Side Vents: 0 Base: Integrated - 8'7 1/2" x 8'7 1/2" Foundation: Options - Concrete Piers or Slab Warranty: Frame - Lifetime; Covering - 10 years Manual: Included Strong Structure, Energy-Saving Design Along with a heavy duty aluminum frame, the Sunhaven hobby greenhouse has 6mm twinwall polycarbonate, designed to stand strong and protect your plants even in heavy snow or high wind. This durable structure will retain heat during the cold months and diffuse harmful UV rays on the brightest of days. The solar-powered automated roof vents save on energy cost while providing increased aeration throughout the greenhouse. This greenhouse offers 75% more space than a typical 6' x 8' model. Tall sidewalls allow for hanging baskets, while the extra width fits larger benches, making it ideal for expanding your garden. Note: This greenhouse does not include shelving and benches shown in pictures.