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Converting a round port to a slot port.
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Calculate the area of the round port(s) being used, then use the square
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root function of your calculator to get the interior dimensions of an
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equivalent suare port. The length (or depth) of the slot port will be the
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same as that of the round port.
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To calculate area: ( Area is a two dimensional measurement )
Circle =3.14 x Radius x Radius
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Circle Port
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Slot Port
Patent No: US D478,556 S
Patent No: US 6,601,645 B1
Patent No: US 6,656,000 B2
9
4"
2"
2"
4" Port
2 x 2 x 3.14=12.6
1"
12.6 x 1=12.6
12.6"