Commercial Lumber Sizes Chart, Table, & Calculator ...
Green lumber is any lumber whose moisture content is greater than 19%.When purchased, rough lumber can't less than 1/8″ thicker or wider than the actual size specified, except that 20% of a shipment can be up to 2/32″ thicker or wider. That's per the American Softwood Lumber Standard PS 20-05, which BTW is a voluntary product standard.