Deal (unit)

Deal is an obsolete unit of measurement formerly used in the UK and US to measure what is today described as "Dimension Lumber". From the late 18th to the early 20th centuries, the term "deal board" referred to rough sawn Spruce or Pine planks two to three inches thick (sometimes thicker), up to 12" wide and 12 to 14 feet long. These were often re-sawn into smaller dimensions by the end-user for use in Wood Framing, Cooperage and Furniture making. They were traded as a maritime commodity.

Deal (UK) is equal to 7 ft × 6 in × 2+1⁄2 in.

Deal (US) is equal to 12 ft × 11 in × 1+1⁄2 in.

Whole deal is equal to 12 ft × 11 in × 5⁄8 in.

Split deal is equal to 12 ft × 8 in × 16 in.

1 Deal (UK) ≡ 8.75 cubic feet ≡ 105 board feet ≡ 0.24777240768 m³

1 Deal (US) ≡ 1.375 cubic feet ≡ 16.5 board feet ≡ 0.0389356640640 m³

1 Whole deal ≡ 0.573 (or 55/96) cubic foot ≡ 6.875 (or 55/8) board feet ≡ 0.01622319336 m³