Two mill rail guide Logging tool Requiring 2 X 4 lumber . The term dimension lumber is used with softwood species (such as pine or fir) that are used in the building trades for framing and other carpentry uses. The reasons why the nominal dimension of this lumber (what the lumber is called) is larger than the actual dimensions involves historical practices in the lumber industry. Originally, a 2 x 4 was cut as a rough green board that was exactly 2 x 4 inches in size, but by the time the boards were dried and planed, the boards became smaller, approaching the now-standard 2 x 4 dimensions of 1 1/2 x 3 1/2 inches in size. In modern lumber practices, the boards are no longer exactly 2 x 4 inches when first cut, but today's drying and planing methods still leave the board 1 1/2 inches thick and 3 1/2 inches wide. The old standard of calling this board a 2 x 4 still remains, even though in today's lumber practices, the board has never been 2 x 4 inches in size.

• Portable and Convenient - Compare with other aluminum mill rail, the rail bracket is perfect for travel and temporary use, and also easy to store
• Buy with Confidence - the package includes two pack of rail bracket and screws(lumber not included), and if you have any issues, please contact us and we will help you ASAP

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