Sorry Lou, I installed mine w/o taking a pic. I just cut the sticks the correct length and forced them inside the duct to recover the original shape removing the concave sides. Once installed it's a triangle again instead of collapsed.
I'm asking about the triangle shaped ducting that goes from the blower to the heater. I have the main piece and the thin sleeve that apparently is supposed to keep it in place but the duct is concave so the moving air never really get to the core. Is there a piece missing that helps it hold...