In which decade in the United States did 2"x4" construction lumber become resized to 1.5"x3.5"?
Correct answer: In the 1960's

PhabPhour
I still call it a 2”x4”

Sassy
I always remember hearing the expression, “ I got hit by a two by four.”

Player #21096534
My family mill would rough cut to 1.75 by 3.75 so the boards could be planed to 1.5 by 3.5.