Original: In the United States and Canada the standard lengths of lumber are 6 , 8 , 10 , 12 , 14 , 16 , 18 , 20 , 22 , and 24 feet .
Simplified: In the United States the standard lengths of lumber are 6 , 8 , 10 , 12 , 14 , 16 , 18 , 20 , 22 , and 24 feet .