outsunny 3 tier mini greenhouse walk in greenhouse garden hot house with 4 shelves roll up door and weatherized cover 56 x 29 x 77 clearOur outsunny greenhouse utilizes lightweight yet sturdy plastic coverings built over a powder coated steel frame. The zippered door of the hothouse allows for easy access and ventilation while it also can be sealed in to maintain the internal climate. This makes the plant greenhouse great for reducing excessive heat or cold and keeping your seedlings secured throughout the seasons. Start your backyard gardening today with this outsunny greenhouse.