What is the name of this?

[Audrey H]

Hi,
I’m missing a part on my 2011 Coleman Niagara pop up tent trailer.
It’s on the back, it protects the trailer from the bed slide out. I have been racking my brain trying to identify it by name to purchase a new one. But have not located one yet.
It’s the white plastic part.
Thanks ❤️
Audrey

[bikendan]

Moved thread from the Slideouts sub-forum to the Tent Camper and Popup section since the OP's questions are specific only to Popups and not typical RV slideouts.