Another "what is this?" thread...

[JohnMD]

Hi all,

I've been enjoying cleaning and "getting to know" our new to us Trailmanor in preparation for our first scheduled weekend trip in May. I am attaching two photos and curious to know what this is. It appears to be a vent of some sort on the back right exterior and it looks to be capped off in the storage area under the rear bed. Perhaps this would be for some sort of option that wasn't included when originally purchased? Perhaps it is included in the event one chose to install electronics needing venting?

Thanks,

John