What Does 1×4 Wood Mean

1×4 and 1×6 boards lose 1/4 inch in thickness and 1/2 inch in width before leaving the mill. That means a 1 x 4 board is actually 3/4 inches by 3 1/2 inches. The larger 1x boards (1×8, 1×10, etc.) … That means a 1×10 is actually 3/4 inch in thickness by 9 1/4 inches.

What is the actual size of a 1x4?

Nominal SizeActual Size1x33/4″ x 2-1/2″1×43/4″ x 3-1/2″1×63/4″ x 5-1/2″1×83/4″ x 7-1/4″

What size is 4/4 lumber?

So, a “4/4” board is four quarters, or 1 inch thick, an “8/4” board is eight quarters, or 2 inches thick, a “10/4” board is ten quarters, or 2.5 inches thick, etc. Board Foot: Rough sawn lumber is usually sold by the “board foot” (bd. ft.).