The Rangeley is rear vented but the flue is cast iron and the opening is straight up,the Fireview and Keystone are rear vented and the flue points straight back.The slip connector sits on top of the cast iron flue so it supports it and it is only clamped to the ceiling box (support).Will the 90 elbow support the slip connector or am i going to have to have screws put into the ceiling support to hold it all.That clamp doesn't seem like much of a support for all that double pipe.Will the 3 screws holding the 90 to the stove support this? Also,will the pipe shield cover the 90 or does the 90 have to be double wall.Pipe to wall is gonna be 10" to a cementboard,tile cover shield 1" from the wall.