Hey Nuru, a while ago in this thread I told you about my sump pump kit "exhausting system" for my JD 4100. I now have it through the wall of my basement garage. I had some 1 1/2" schedule 40 plastic conduit kicking around, so I hole-sawed a 2" diameter hole through the end wall of my garage next to a stud, pushed about an 18" piece or so of conduit through the hole so about a foot was outside and clamped it to the stud. The 1 1/4" sump pump hose snugly fits in the conduit, and the conduit fits in the 2" hole. I cut the outside end of the conduit at a bevel so it wouldn't rain in. Works good for me.
Duane