... length, for you optionSection1m, 1.5m,2.0m, for you optionWall Height2.5m (can be adjustable)Roof Height4.5m (can be adjustable)OptionalSide ventilation ... vegetables, like tomato, cucumber, chili etc, also grow cut flowers 2. Structure1) Greenhouse built by hot galvanized steel pipe, is composed ... of column, arch, purline, lattice bar, gutter and door 2) Column will be 38 x1.5mm pipe (1.2inch x ...