Their exterior post design became the way boxcars are fabricated largely replacing the double sheathed (smooth side) car body construction. These insulated cars measured 50-ft. 6-in. (or 7-inches in some cases) in interior length and had a cargo capacity of roughly 4400 to 5033 cu. ft. They were equipped to hold shifting loads with built in restraining devices such as from Car Pac or DF Evans. Further, their 20-inch cushioning devices on the cars absorbed the longitudinal forces resulting from slack action that can damage the cargo. They carried food products such as can goods, drinks, packaged food products, dog food, and even chocolate - which needed protection from the changes in temperature, but required no refrigeration.
Model Features:
The Atchison Topeka and Santa Fe Railway begin repainting their Class Bx-146 in the 1980s to all bold red paint scheme. In 1984, the "Super" was removed and lettering style changed from Railroad Roman to San Serif Gothic characters. These class Bx-146 insulated boxcars were originally ordered from Pacific Car & Foundry in 1971. They have a cargo volume of approximately 4433 cu. ft. and were equipped with Keystone 20-in Shock Control cushioning. They were also equipped with Landis Plug Doors. These boxcars carried food product that didn't require refrigerations but needed insulation from the weather. Re-weigh date is 8-84. ATSF Super Shock Control car will have Landis Doors as per prototype - actually Plate B car: Plate B is 15'-1" vs Plate C 15'-5" over extreme height.