Our King Canopy Greenhouse will assist you in growing the most beautiful flowers and delicious produce. Structured with a 1 3/8″ 20 gauge steel frame, the King Canopy Greenhouse features adjustable side rails for added stability and interchangeable corner brackets. It easily installs in just 30 minutes!The King Canopy Greenhouse is designed with a zippered door and rear vent for ventilation. It is completed by a polyethylene, rip-stop cover that offers a high UV protection and a 2 year, pro-rated warranty