Walk-in Tunnel Greenhouse, 3 x 2 x 2 m, Portable Plant Hot House with Galvanised Steel Frame, 1 Top Bar, Diagonal Poles, Zipper Door and 6 Roll-Up Windows, GreenWalk in Tunnel Greenhouse, 3 x 2 x 2 m, Portable Plant Hot House with Galvanised Steel Frame, 1 Top Bar, Diagonal Poles, Zipper Door and 6 Roll Up Windows, Green Product Features Excellent Air Ventilation With 6 mesh windows, our tunnel greenhouse can keep out small "annoyances" and increase cross ventilation and airflow. Moreover, we have a roll up zipped door for air to freely enter and exit. Keep your space clear of debris and make sure every