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Unread 10-10-2011, 06:10 PM   #8717
Pappy
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Join Date: 05-09-11
Location: Granite City, Illinois (Near St. Louis "GO CARDS")
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Here are the square inch area of the holes:
1 ea. 2" bung = 3.14
4 ea. 7/8" = 2.40 (weber wheel vent)
4 ea. 1/2 = 1.57

I have 2 weber wheel vents on my weber top UDS and I have them both all the way open all the time = 4.8 SQ inches. I control the air at the bottom for temp.
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