ShelterLogic designed this Raised Bed Greenhouse to be sturdy, yet easy to assemble. Its compact size make it perfect for starting seeds and for extending your growing season. A high-quality steel construction makes it extremely durable. The roll-up cover provides airflow and temperature control. Tension ropes hold the cover in any position — from fully-closed to fully-open — to allow desired flow. This round-style greenhouse measures 4 feet x 4 feet x 1-11/12 feet.Wood frame sold separately.