Response from Heatilator support -
We do not manufacture the pipe. If there are different clearances for that pipe then you must follow per their instructions. In the manual it does state to * SEE PIPE MANUFACTURERS CLEARANCES - NOT TESTED*
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DuraBlack -
IMPORTANT DuraBlack must be installed with at least an 18" Clearance to Combustibles
Excel -
EXCELPrime 18" Clearance Stove Pipe - 18" clearance minimum - A MAJOR CAUSE OF CHIMNEY RELATED FIRES IS FAILURE TO MAINTAIN REQUIRED CLEARANCES (AIR SPACE) TO COMBUSTIBLE MATERIALS. IT IS OF UTMOST IMPORTANCE THAT THIS CONNECTOR BE INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS.
Selkirk -
SAFETY - Saf-T Pipe must be installed with a minimum of 18" clearance to any combustible surfaces or materials
IMPORTANT: A major cause of vent related fires is failure to maintain required clearances (air spaces) to combustible materials. It is of the utmost importance this Saf-T Pipe be installed only in accordance with these instructions.
Ventis single-wall
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