Old May 6, 2003 | 04:18 AM
  #1  
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Integrity
Some have it, some don't
 
Joined: Mar 2002
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From: RavensTown, Maryland
Default How do you measure the size of the collector on a header?

I've tried a search and couldn't find an answer to my question. When measuring the size of the collector on a header, do you measure the outer diameter or inner diameter?
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