easy assembly & move! B. No foundation and welding are required C. Good for vegetable, tree, mushroom and poultry. Especially for large scale production! 2. Structure: A. All structure by hot galvanized steel pipe, anti-rust for 10-15 years. B. Consist of arch, post and door, lattice bar and middle column are for you optional. C. Arch diameter: 25mm(dn20), 32mm(dn25), 38mm(dn32) or 48mm(dn40). D. Thickness: 1.2~2.0mm 3. Covering material: The greenhouse is covered by 3-ply (pe+eva material) poly film (plastic film) A.130micron/150micron/180micron/200 micron thickness for your choice B. Anti-uv, anti-drip C. Temperature range -40 c to +60 c. D.3 years guarantee, 5 years life 4. Connect: all connects kits offered. No welding required. 5. Assembly: the arch directly insert into the ground by 40cm.No foundation required. 6. Ventilation system: manual film roll-up system on 2 sides with insect net.¡aoptional 7. Door: sliding door, dimension is 2mx2m, quantity is for you optional Container