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Here I describe the difference between 2 types of sheet metal cans. The C-box, that is square, and the B-box that is rectangular. You are sure to find a size that works with your sheet metal application.
The Sheet Metal Kid channel consists of how to's and tutorials on how to use HVAC and sheet metal hand tools as well as how to install duct and ventilation correctly. We are a highly interactive channel to help you with all your sheet metal and ducting installation.