two-by-four

US /ˌtuː baɪ ˈfɔːr/
UK /ˌtuː baɪ ˈfɔːr/
"two-by-four" picture
1.

deska 2x4, kantówka

a piece of lumber with a rectangular cross section, nominally 2 inches by 4 inches, used in construction

:
He used a two-by-four to brace the wall.
Użył deski 2x4 do wzmocnienia ściany.
The frame was built with several two-by-fours.
Rama została zbudowana z kilku desek 2x4.