This greenhouse-in-a-box Greenhouse with easy-flow roll-up side vents delivers quality construction, quick and easy assembly, and best-in-class value. Ready to build out of the box, the greenhouse-in-a-box with easy-flow features a powder-coated steel frame with steel stabilizers for added strength and durability. The translucent, ripstop cover is waterproof and UV-treated, providing enhanced illumination - for plant growth and protection. Easy slide cross rails ensure a snug cover fit while Ratchet-Tite tensioning provides solid cover anchoring to the frame. Easy-flow side panels and zippered half-moon end-panel vents provide airflow and temperature control.