We have recently remodeled our house and extended our chimney and I am in need of a 3' section of pipe to complete the project. I currently have a Heatilator model FP36 fireplace. The part that I am needing is the pipe which is Heatilator part number IC836. It has an 8" inside diameter and is 36" long. Does anyone know where one section of this pipe might be available for purchase? Thanks for the help!