The Wallace Premium Educational Greenhouse is designed for schools with horticulture programs, correctional institutions, and serious gardeners for both growing and therapeutic reasons. The Wallace Premium Educational Greenhouse has a 2 in. x 2 in. galvanized steel frame with pre-welded stanchions and commercial graded 8 mm twin wall corrugated covering (walls and roof) are the same specifications used in commercial products with the walls and roof warranted for 10 years and have a 15-20 year life expectancy. The Wallace Premium Educational Greenhouse is 12 ft. wide with lengths of 18 ft. and 24 ft. with 8 ft. tall walls and a center peak of 11.5 ft. for optimal air circulation and greater interior height.