About This 9.4x7.5x7.4 FT Hobby Greenhouse & Sunroom: Recommended foundation size: 10.5x8.5 FT. 6mm Twin-wall translucent PC panels(UV Protection 99.99%) Walk-in Greenhouse for Better Ventilation: Keep both 2 swing doors (with door hook)and 2 four-level adjustable roof vents open can let in more fresh air while managing excess moisture for the backyard greenhouse Solid Material & Foundation: Heavy duty greenhouse has a rust-resistant aluminum frame (1.5mm). 4 corner posts & 2 middle posts help bury the greenhouse deep in soil or concrete for extra stability. Snow Load Capacity:18 psf; Wind Rating: 60 mph Built-in Rainage Rain Collection Device: Garden Greenhouse update 4 corners have drainage holes and attached pipes to collect and drain water, convenient for connecting Rain Barrels and maximizing the use of water resources Installation Tip：3 DIY enthusiasts can erect this winter greenhouse kit in 10 hours. Please use a box to hold screws and small accessories in case of missing Overview Color : Black Brand : HOWE Product Dimensions : 113"L x 91"W x 89"H Cover Material : Polycarbonate (PC) Frame Material : Aluminum
