Professional plastic tunnels are intended for early cultivation of lettuces, radishes, onions, garlic, Zucchini, tomatoes, cucumbers, preparation of Polish nurseries, the cultivation of flowers. The tunnel structures are intended for relatively low initial investment. Polyethylene tunnels are ideal for more mild winters and hot summers, as having significant vented area and height. Under glass tunnels are fulfilled by the hot wire steel tubes and are covered with high-quality polyethylene company Ginegar "which guarantees high endurance of wind and the absence of corrosion.