I've seen the window style mounted through the side/front/rear wall, down low below the folding part. Also seen the typical RV roof mount. And I saw one that mounted a window a/c through the folding sidewall (it was a hard sided model) and it was removed to fold the pup down. Not a big deal with a 4000-5000 btu window type. I've also seen the portable (roll around) a/c units in use - that may be the easiest solution for night tie use. Just move it out of the way during the day - even put it outside (with a cover in case of rain).