Pecification: tunnel width-6m-10m;length-any length, for you option ;section-1m, 1.5m, 2.0m, for you option; wall height-1.8m(can be adjustable);roof height-3.5m(can be adjustable);optional- side ventilation system, cooling system, shading system, irrigation system Features: 1. Economical, low cost, easy frame! easy assembly ! 2. No foundation or welding. 3. Good for vegetable, tree, mushroom and poultry. Especially for large scale production! 4. All structure by hot galvanized steel pipe, anti-rust for 10-15 years 5. Covered by 3-ply (pe+eva material) poly film (plastic film), anti-uv, anti-drip 130micron/150micron/180micron/200 micron thickness for your choice 6. All connects kits offered. No welding . By full container