The GrowIT Greenhouse-in-a-Box 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 GrowIT Greenhouse-in-a-Box with Easy-Flow features a powder coated 1-3/8 in steel frame with ShelterLock 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.