Atlas' HO REA Steel Express Reefer is part of their premier Master Line range of freight cars. This model, Item# 20005348, represents the series as delivered in 1947.
This is partial text from the full article (usually with photos) at https://railroadmodeling.net/news/rea-steel-express-reefer-rea---1947-as-delivered-6362-item-20005348