This 15 x 6.5 x 7 ft walk-in tunnel greenhouse gives backyard gardeners enough headroom and floor space to work standing up while tending rows of vegetables, flowers, or seedlings. A galvanized steel hoop frame with 1 top beam and 2 diagonal poles keeps the dome-shaped structure steady through wind and heavy snow loads, while the 140 g/cm3 PE cover blocks UV rays and sheds rain without letting warmth escape. Eight roll-up mesh windows plus a zippered door let you dial in cross ventilation on warm days and seal the space up tight when frost threatens, extending the growing season well into fall and winter. At 37.3 lbs, the frame ships with connectors, screw covers, ropes, and stakes so it goes together without extra hardware and stays anchored to the ground.