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1 1/2"x 5 1/2"
72 units
A 2 x 4 is piece of lumber typically used in framing houses. A 2 x 4 actually measures 1-1/2" x 3-1/2" - as the wood dries it shrinks until it reaches this nominal size. Typically lengths for 2x4s are 8' and 12'. This lumber is typically made from a soft wood, like pine. When used as the verticals of framed walls, they are called "studs".
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There are different sizes when framing lumber. The most common size of framing lumber is 2 by 4.
http://www.brownlumberservice.com/PDF/lumberweight.pdf
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It would depend on the material that the 2x2-8' was made of.
In lumber, a 2x4 represents the width and height of the wood. The last number describes the length. A 2x4x8 is eight feet long.
Its your age x 2 + 8.
We went to the lumber yard to pick up some 2 x 4s.
The common sizes for walls are 2 x 4 in 8, 10, 12 and 16 feet and 2 x 6 in the same feet lengths.
4 x 8
1 1/2 x 3 1/2".
1 1/2"x 5 1/2"