Posted April 13, 200916 yr Maybe this is super simple...but could someone maybe help me with this? how do you calculate square inches of a port? is it just LxW of your port? Ive built my share of boxes and never paid attention to this rule...Thanks guys!
April 13, 200916 yr Square inches is an area, so you measure the area of your port. Not always L*W as it may not be rectangular.
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