This all stainless steel double wall constructed universal wall attachment kit provides of method of emitting the combustion exhaust out of your unoccupied generator enclosure for any 1-1/2” ID flexible steel tubing exhaust kits. The inner pipe is 13” in overall length with a slash cut 3” long exterior end for prevention of weather penetration and a double wall section to pass through the enclosure wall. Interior attachment length of the 1-1/2” exhaust pipe is an approximately 1” long section. The outer pipe is 2” OD and 8-3/4” long with about 8” going through the wall. The 5” X 5” mounting bracket has 4” X 4” hole spacing for 5/16" diameter bolts/screws/threaded rod attachment that you supply depending on application. It is formed with a 3/4" air gap to reduce the amount of contact area and also to provide an air gap for cooling between the bracket and the exterior wall. The bracket also has a series of holes on the outside to vent the space between the two walls of tubing.