The semi-circular ventilation ducts are suitable for ventilation of agriculture products, such as potatoes, onions, carrots and tuberous products. The ducts are made of high quality galvanised sheet steel, which assures a long service life. TT ventilation ducts are assembled from thirteen different models. This enables total lengths up to 30 metres to be constructed.

- Excellent air distribution
- Product-friendly
- Easy to install
- Guaranteed long life