This single span greenhouse kit uses a plastic film tunnel design over a galvanized steel frame, which makes it a practical and economical option for vegetable seeding and strawberry growing. Widths run 6 m to 12 m, with wall heights of 1.8 m to 3 m and top heights from 4.5 m to 7.5 m. Frame steel is available hot galvanized at 120 g per square metre or hot dip galvanized at 275 g per square metre, and the PE film cover comes in a range of thicknesses.
A single span tunnel house is the simplest way to put a protected growing space over a field, and for vegetable seeding and strawberry crops it covers the essentials at a modest cost. This kit pairs a galvanized steel arch frame with a PE film cover and is sized across a range of widths and heights.
The arch frame is galvanized steel, supplied either hot galvanized at 120 g per square metre or hot dip galvanized at 275 g per square metre, with the heavier coating reserved for humid or coastal sites where corrosion is faster. Final frame design is set by the span width, so the structure stays adequate as the house widens. The cover is PE film, available in different thicknesses, and a film rolling system can be fitted for side ventilation. Cooling, circulation fans and side windows are optional. Growers planning protected cropping often follow extension guidance such as that published by Michigan State University horticulture, and trade reporting on FreshPlaza.
The frame arrives as pre drilled galvanized sections that bolt together over a prepared base, with no field welding required, and the film is drawn over the arches once the frame is complete. Because the cover is film rather than a rigid panel, it is the part that wears: film normally lasts around three years before transmission and strength drop, so replacement belongs in the cropping calendar. Between covers, check tension and fixings at the start of each season, confirm the film rolling mechanism runs freely, and keep drainage clear around the base.
These houses suit vegetable seeding, strawberry production, cut flowers and general field protection, and the modest structure keeps the cost per square metre low for seasonal crops. Wider spans suit larger blocks, while narrow spans work well for row by row coverage. Compare our film greenhouse range and the greenhouse with plastic film, or review our greenhouse for tomatoes for a fruit crop layout.
For a single span house, staying at or below 12 m keeps the structure efficient. Narrower spans suit row by row coverage, while wider spans reduce the number of houses needed for a given area.
Hot galvanized steel at 120 g per square metre suits most inland sites. Step up to hot dip galvanized at 275 g per square metre for humid, coastal or chemically exposed locations where corrosion would otherwise shorten frame life.
Yes. A film rolling system, either electric or chain type, can be fitted to the side walls, and side windows with circulation fans are also available. Cooling pads can be added for hot climates.
Around three years under normal use. The cover can be replaced on site without dismantling the frame, so ongoing cost is limited to the film itself.
Send your required width, length and height, your crop, and your local wind and snow loads. We reply with a layout drawing and a full quotation covering frame, film, ventilation and fittings.
