The Jefferson Premium Grower’s Edition Greenhouse is the perfect greenhouse for those looking for a large, quality structure to grow in with a reasonable price. The Jefferson Premium Grower’s Edition Greenhouse has a width of 16 ft. at lengths of 24 ft. and 30 ft., and a 2 in. x 2 in. galvanized steel frame that provides your crops with abundant light and a strong structural integrity for your greenhouse to last for years to come. With side walls of 6 ft. and an interior peak of 9.5 ft it’s great for those looking for a big greenhouse with great air circulation but without the high ceiling.