Alton Cedar Structure Evolution Octagonal Greenhouse 8981 12x8 Storage Capacity 1444 cubic feet 10x10 Storage Capacity 1444 cubic feet 1444 cubic feet 1926 cubic feet 1926 cubic feet 2408 cubic feet 2408 cubic feet 2890 cubic feet 2890 cubic feet Wood Treatment Pressure Treated Pressure Treated Pressure Treated Pressure Treated Pressure Treated Pressure Treated Pressure Treated Pressure Treated Material Solid + Manufactured Wood Solid + Manufactured Wood Solid + Manufactured Wood Solid + Manufactured Wood Solid + Manufactured Wood Solid + Manufactured Wood Solid + Manufactured Wood Solid + Manufactured Wood Foundation Required Yes Yes Yes Yes Yes Yes Yes Yes Door Lock Included Yes Yes Yes Yes Yes Yes Yes Yes Ventilation Included No No No No No No No No Roof Style Barn Gambrel Barn Gambrel Barn Gambrel Barn Gambrel Barn Gambrel Barn Gambrel Barn Gambrel Barn Gambrel Shed Door Style Double Door Double Door Double Door Double Door Double Door Double Door Double Door Double Door Wind Rating 90 mph 90 mph 90 mph 90 mph 90 mph 90 mph 90 mph 90 mph Weather Water Resistant Yes Yes Yes Yes Yes Yes Yes Yes Maximum Roof Load 30 lb Width 8" Height 4" Depth 8" Finish Copper Step into a world where style meets substance with the Alton Octagonal greenhouse 800mm (9ft 2in) C = Eaves height 1