It's an air kit that can be accessed by either the right or left hand
side of the stove prior to installation. It has a lenghth of metal pipe
that goes out the back of the stove to the outside. Your owners guide
should display all of this. If you don't have one download a pdf copy.
The air is pulled in with the air pressure created when the smoke is
pulled up the flue. The opening for the air might be in the firebox
behind the stone slates or on the side of the firebox through
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