USB/110v duplex receptacle

[Papa]

I'm thinking about having my electrician add a couple of outlets similar to the ones in the link below in my 2011 Montana 295RKD. While researching them it occurred to me that the outlet boxes in my camper might not be as deep as those in a house. Do any of you know for sure about the depth of the outlet boxes in our Montanas? I don't particularly want to crawl into my trailer in 100+ degree temperatures we're having here in Oklahoma.

https://www.lowes.com/pd/Eaton-White...let/1002943646