Rion EcoGrow Greenhouses are the top selling greenhouse in its class. It's Attractive, Durable, Expandable and Easy-to Assemble. The durable frame is constructed from UV protected PVC resin and held together with push-n-fit resin connectors. Includes a manual roof vent and a single hinged door with latch. The dual walled polycarbonate panels offer superior strength, safety, light diffusion and heat isolation. The Rion Greenhouses can withstand winds of up to 80 mph and have been tested to support a 1,100 lb snow load. All this quality plus an easy, no-tool assembly makes a Rion Greenhouse perfect for the growing enthusiast's needs. Base kits are available as an optional accessory. Assembled size: 78" W x 102" D x 76" H