End cover for 5" PVC fence post used for Travel Trailer sewer hose storage

I needed a place to store the heavy duty sewer dump line for my travel trailer. The swivel fittings would not fit in the 4" trailer bumper (and people say that the moisture will rust out your bumper).

A piece of 5" PVC fence post fit nicely above my bumper and behind the spare tire. I used pull straps to attach it to the bump. The fence post covers didn't look right for end caps.

I designed and printed a simple cover that fits inside the ends.