Most make one and mount it under the coach or some other place convenient. I made mine out of a 5" plastic fence corner post from Lowes. I attached one cap permanently to the back end and got a 4" plastic rain gutter with end caps to slide inside the post. Closed it with another 5" post cap and added latches to secure it. The smell stays out side.
If you want more details I'll be happy to provide.
Linear Mode
