15' x 7' x 7' Walk-in Tunnel Greenhouse Garden Plant Growing House with Door and Ventilation Window, GreenWALK IN GREENHOUSE: Our backyard greenhouse is an ideal way to extend your growing season while easily managing your plants and protecting them from extreme temperatures. PE COVER: Our fully closed water and UV fighting PE cover of the outdoor greenhouse tent maintains high humidity levels for growing tropical plants and allow nourishing sunlight to pass through. The 5. 9 in extended edges are supposed to be deep buried in the soil to tighten the