Commercial Polytunnel 27' Wide Single Span

The 27' wide polytunnel is the widest polytunnel that can still have a trenched in sheet. It is therefore ideal for the larger grower to have a series of large, economic structures that can still be sheeted using traditional methods. The tube used in this framework is 60mm Z35 pre galvanised material as in the 24' tunnel. There are however two additional diagonal bracings per end that go from the ridge to the outer curve of the gable hoops to give extra rigidity. All the fixtures and fittings are electro plated for protection against corrosion.

The timber used for the ends is tanalised and has the same configuration as the 24' tunnel, 3" x 3" for the goal post and lintel, 3" x 2" for the polythene support framework above the doorway. Foundation tubes are 1½" nominal bore tube, heavy galvanised.