15' x 7' x 7' Walk-in Tunnel Greenhouse Garden Plant Growing House with Door and Ventilation Window WhiteWALK IN GREENHOUSE: Our green house is an ideal way to extend your growing season while easily managing your plants and protecting them from extreme temperatures. PE COVER: Our two layer 140 GSM PE cover features a reinforcement grid through the middle to prevent tearing. It protects plants from UV scorching while allowing 85% of nourishing sunlight to pass through uninterrupted. The 6 in extended edges are supposed to be deep buried in the soil to