Consolidated Builders Supply, Inc. - Here is the evolution of the 2X4 framing stud. Started out a full 2"X4" then became a 1 3/4"X3 3/4" and today is is only 1 1/2"X
2 in. x 4 in. x 2 ft. Premium Southern Yellow Pine / Fir Dimensional Lumber 271736 - The Home Depot
2x4x10 SPF Dimension Lumber 1000100158 | The Home Depot Canada
LIFT OF 8 FT. 2X4 LUMBER
2x4 (1-1/2" x 3-1/2") Poplar S4S Lumber, Boards, & Flat Stock from Baird Brothers