I am installing a BK princess insert. I took out the old 45 degree elbow on my old insert. I am not happy with this connection, does not look good to me. The male part of the SS liner is not going into the stove all the way. Evan if I try and push it down it will not go all the way in. I just purchased a new elbow and hope it works. to much wet snow on roof to pull up liner and try it out. Check out the pictures.