The translucent cover of the ShelterLogic GrowIt 10 ft. x 20 ft. x 8 ft. peak-style greenhouse provides enhanced illumination to help promote the growth and protection of your plants, flowers, and vegetables. Built with a 1-3/8 in. high-grade, all-steel frame, this durable and spacious greenhouse offers 1,600 cu. ft. of storage space for a wide variety of plants. Perfect for starting seedlings and extending the growing season, the cover is UV treated inside and out with added fade blockers, anti-aging and anti-fungal agents to help withstand the elements.