This single span tunnel greenhouse pairs a hot dip galvanized steel frame with a plastic film cover, and can be finished with a shade net over the film. The frame carries the film without posts inside the bay, so beds and paths stay clear. The film holds warmth and diffuses light, and the shade net cuts summer glare and lowers the temperature under the cover. It suits vegetable growing on farms, small holdings and kitchen gardens.
This single span tunnel greenhouse covers one bay of open ground with a plastic film cover on a hot dip galvanized steel frame, and can be finished with a shade net laid over the film. The arch carries the cover without posts inside the bay, so beds, paths and machinery stay clear. The film holds warmth and diffuses light along the row, while the shade net cuts summer glare and lowers the temperature under the cover. Span runs from 8m to 12m and height from 3m to 8m, with length set to the site.
The frame uses hot dip galvanized steel pipe and formed hoops. The zinc coating resists the humid air of a working greenhouse and keeps the structure sound through years of service. Hoops are tied by purlins and cross braces, and the whole frame is assembled from bolted sections on site without welding.
The film cover holds warmth, spreads light across the row and costs far less than glass or rigid sheet. Where summer sun is strong, a shade net is drawn over the film on the same frame, so the same house works through a cool spring and a hot summer without a second structure.
| Structure material | Hot dip galvanized steel pipe |
| Covering material | Plastic film, with optional shade net overlay |
| Roof shape | Arch roof, single span |
| Span | 8m / 9m / 10m / 11m / 12m |
| Length | 10m to 100m, or to client demand |
| Total height | 3m to 8m |
| Ventilation | Roll-up side film or opening end flap |
| Service life | 15 to 20 years for the frame under normal growing conditions |
| Applications | Vegetable growing, seedling raising, flower and fruit crops |
A single span tunnel is the simple form of a film house. One bay means fewer posts inside, less steel in the frame and a clear run for beds and paths, which is why it is common for vegetable growing on open ground. The arched roof sheds rain and snow, and the film can be replaced over the same frame without taking the structure down. FAO notes that protected cultivation of this kind extends the growing season and raises yield per square metre in many climates.
Where summer sun is strong, a shade net drawn over the film cuts direct light and lowers the temperature under the cover, which protects leafy crops from scorch and slows bolting. Ventilation comes from rolling up the side film or opening an end flap, so warm air leaves at the ridge and cooler air enters low down. HortiDaily covers how commercial growers plan this type of structure.
The frame ships as a knockdown kit of galvanized pipe and hoops, and the film is supplied in rolls. Work follows a set sequence: set the foundation, raise the hoops and purlins, then tension the film over the frame. Our engineers can travel to site to guide installation when required.
Routine work is limited. Check the film tension after storm season, roll and store the shade net at the end of summer, and inspect the pipe joints for movement. The galvanized frame is rated for 15 to 20 years under normal growing conditions.
This single span tunnel greenhouse suits vegetable growing, seedling raising, flower and fruit crops and general farm cover work. Because span, length and height are all set to demand, the same frame system fits a kitchen garden or a large estate. Browse the full range on our tunnel greenhouse page, or compare it against the film greenhouse and glass greenhouse ranges.
It is a film house built as one bay on a galvanized steel frame. Fewer posts inside make it easy to work with beds, paths and small machinery.
Yes. A shade net can be drawn over the film on the same frame to cut summer glare and lower the temperature under the cover.
The hot dip galvanized steel frame is rated for 15 to 20 years under normal growing conditions. The film cover is replaced on a shorter cycle.
Span is available in 8m, 9m, 10m, 11m and 12m. Total height runs from 3m to 8m, and length from 10m to 100m or to your site requirement.
The frame ships as a knockdown kit of galvanized pipe and hoops, with the film in rolls. Our engineers can travel to your site to guide installation when required.
