Duo design: Comes with a bottom garden bed and top cover - use pieces of this raised planter and small greenhouse together or separately. Plastic cover, with two windows: A protective shield for growing plants inside mini greenhouse. Traps heat in. Two roll-up windows to access inside easily, also brings fresh air in too. Open-bottom steel base: Galvanised for extra strength, it provides a strong fence for plants. No bottom in planter box to allow direct contact with soil water doesn't build up either. 10cm extended cover edges: Dig into soil, creates extra stability for small greenhouse. Dimensions: 90H x 70L x 70Wcm. Raised bed planting area: 29. 5H x 59. 5L x 59. 5Wcm.