I purchased my 2019 Newmar Dutch Star without the factory option for the sanicon. The primary reason I did not have the factory install it is their setup was not ideal, and I wanted a better solution.
One of the features that Newmar includes is a solid nylon disk that is pre-fit to the hose. This disk will block the 5 inch exit hole while the system is connected to sewer. Utilizing the factory exit hole allows for the bay door to be securely closed. With the Newmar provided disc, this hole is sealed.
I attempted to purchase the disc directly from Newmar, but after several months of unsuccessfully trying to even get a part number, I gave up.
I recently acquired a 3D printer, and my first design and print was cover that can be used to fill the hole.
I wanted the cover to be easily installed and removed, so I designed a slot that allows the hose to be inserted. Once the hose is installed, a small end cap is inserted that secures the openings, preventing rodents and other bugs from gaining access.