New answers tagged lumber
The Canadian building industry is almost entirely homogenized with the US building industry. We use the same products so we use the same labels. Everyone here knows that a 2x4 isn't really 2"x4". 1/2" copper pipe was supposed to be 1/2" ID but the walls were too thin so instead of expanding the OD and making the connectors not fit, they made the ID small, so ...
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