Why do some brands of stoves require an OAK?

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RedNeck Wrangler

New Member
Jun 6, 2008
54
"The Alton Bog" Maine
What is the difference? Is it a liability issue? Because some stoves call it an option. Don't they all take in air the same way?
 
I am convinced that CO escapes out of the intake on the things during a power failure without a really strong flue draft. No matter who's pellet stove it is.
 
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