If you are a garden hobbyist who would like to enjoy flowers and vegetables year round, the Riga Series greenhouse is perfect for you, The roof is kept clear even in the winter months with the help of the hinge free, ""onion design"", There is no routine maintenance required for these greenhouses which makes them even more convenient, Base only (for use with Riga III Greenhouse), Adds an additional 5 inches of height to the greenhouse when coupled with the Medium Greenhouse Top, Overall dimensions: 6"" H x 116"" L x 126"" D Helpful Greenhouse Advice, SKU: EXTR106