Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia. counterpart. n. in the law of contracts, a written paper which is one of several documents which constitute a contract, such as a written offer and a written acceptance. Often a contract is in several counterparts which are the same but each paper is signed by a different party, particularly if they are in different localities.
dimension lumber. Joists, planks, rafters and other standard commodity lumber that usually range in width from 1 to 2 inches, in thickness from 2 to less than 5 inches, and in length from 3 to 12 feet. quality process
Dimension Lumber Sizes. Standard dimension lumber sizes produced in North America are listed as surfaced dry sizes (19 percent moisture content or less) in the table below. The availability of lumber sizes varies somewhat according to the area of the country from which the raw material originates. Lengths up to 6.1 m ( 20â² ) are commonly available from western Canada and up to 4.9m (16â²) from eastern Canada. Longer lengths are available on special order.