Thank you sir for your response. Sorry but I don't really understand. The blower I am considering is described as having 125 cfm and 380 pa. The run will be maybe 14" but probably closer to 12". It, as well as the tureyre (hope I spelled that right) is made of 2.5 inch square tubing, and is at a 22.5 degree angle going up into the firepot. Again thank you for your time...........