Definitions for "Linear feet"
A one-dimensional measurement of length.
The total length of required lumber. For example, three 8-foot-long 2x4s and four 6-foot-long 2x4s both would be described as 24 linear feet of 2x4s.
A standard measure of the quantity of archival materials on the basis of shelf space occupied or the length of drawers in vertical files or the thickness of horizontally filed materials. For example, a moderately full manila folder file is typically 3/4 of an inch wide at the bottom. Approximately 16 such folders may equal one linear foot.