Mom and Dad had Thanksgiving at there house today because we were at the In-Laws yesterday. So I got there at 4 after work (Yes... I had to work today.. and tomorrow and Sunday and the rest of next week) and didnt leave until about 7. Got home at 7:30 and only had enough time to paint the "Thimble" and seal the vent and put the brace on at the top of the 90* before going horizontal. I have 4 ft of Horizontal going out the house. Really only needed 3 ft. But the 2 Fahrenheits I have seen in action have a little black soot they leave behind. They both mainly burn Corn. And the vents are about the minimum away from the structure. One of them is facing the prevailing wind. So I wanted to be safe. Even though I am burning strictly pellets. I may one day burn corn. And 4' horz is within the Manufacturers specs. Also the 5 ft of vert should help a little. The horizontal also has at least 1/4" per ft. Over an inch of rise throughout. Just have to run the dedicated power line to it tomorrow after work. Then I can fire it up (Not using an extension cord. As much as I wanted to tonight). After that. Its ductwork and wiring the T-stat and putting it upstairs in the hallway.