Sewer Hose Storage
I measure the Inside Diameter of the white pvc pipe for Sewer Hose Storage at 3 7/8 inches. Its hard to measure accurately but it is definitely a little less than 4 inches. I guess it could be 4" nominal pvc pipe which has an ID of 3.998.
As to cutting and adding another section. There really is very little room in that area to do much. The current pipe opening into the little hatch section is limited to current size. The pipe actually goes in for maybe 6 inches then transitions upward to another straight section. This "kink" in the current pipe is to route it over the top of a Truma furnace duct section that heads toward the front. I will add a picture that might show a better view.
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