What Is The Actual Thickness Of A 2×4?
What Is The Actual Thickness Of A 2×4? A piece of surfaced (sanded smooth) 2×4 lumber actually measures 11⁄2 inches thick and 31⁄2 inches wide. In rough-cut condition, a 2×4 is slightly less than 2 inches thick and approximately 4 inches wide. When wood is milled from a rough to a smooth surface, it loses