What is the actual dimension of a 1 by 4 board?

A 1 by 4 board refers to a piece of lumber that is nominally designated as 1 inch thick and 4 inches wide. However, due to the processes involved in milling and surfacing, the actual dimensions of the board are slightly smaller than the nominal measurements.

After drying, planing, and finishing processes, the actual dimensions of a 1 by 4 board typically measure about 3/4 of an inch thick and 3 1/2 inches wide. This reduction in size is standard in the lumber industry to provide a consistent final product that can be used for construction and woodworking projects. Understanding these measurements is crucial for anyone working in technical theatre, where precise dimensions can significantly affect set construction, props, and overall design.