[5] Ford, Dodge and Chevrolet/GMC have historically been the most common manufacturers of conventional cab/chassis[citation needed] to which the cargo box is attached by various producers (called body builders or upfitters).
In British English, box van is a term for a four-wheeled covered goods wagon (freight vehicle) with a fully enclosed body.
A van is used for an enclosed railway freight carriage or medium or smaller commercial road vehicles.
This style of body was designed to accommodate the high-volume, low-weight loads of straw hats which were part of Luton's industry.
Straw hats were wrapped in hessian fabric in long cylinders to fit across the width of the van.