ScaleTrains HO Scale: Operator Series - GATC 4180cf Airslide® Covered Hopper - Union Pacific
Introduced in 1963, the GATC 4180 Airslide Covered Hopper was designed for granular commodities such as flour, starch, and sugar. The patented “Airslide” unloading system uses pressurized air to aerate the special fabric lining of the bays, effectively fluidizing the commodity so it to flow more easily during unloading. Some Airslides continue in service today including ones used for BNSF buffer car service.