A couple of ancient Nordic grain dryers. These function similarly to other silos in the game due to the drying of the grain and absence of moisture. To boost capacity, there are also a few vintage grain bins that have been patinated.
Silos Type: Placeable; Silos Cost: $48,000; Silos Cost: $72,000
Capacity: 325,000 l and 170,000 l
Placeable Silo Extensions; Silo Extensions; Cost: $14,000; Cost: $18,000
Capacity: 170,000 l and 94,000 l

Thanks to Agrogaatti