Built for serious growing, this 20 x 10 x 7 ft tunnel greenhouse gives you enough walk-in room to work rows of vegetables, flowers, or nursery stock under cover. Three top beams and four diagonal poles brace the galvanized steel hoops (0.8 in diameter, 0.02 in wall thickness) against snow load and wind, while U-shaped stakes, guy ropes and tie-downs anchor the whole structure. The green 140 g/m² PE cover fits the frame closely to block UV rays, rust and driving rain, keeping plants warm through winter and shielded through summer storms. Twelve mesh windows and two roll-up zippered doors let you dial in cross-ventilation on hot days while keeping small animals out, and screw covers on the connectors guard against scratches and rust over time. At 67.5 lbs, it assembles with basic hand tools and suits both backyard growers and small commercial operations looking to extend their season.