Safety Mod Pass Through to Truck Window

I bought a boot to go between the camper and truck window direct from Northstar when I bought my camper. I think they sell to the aftermarket. Only takes a phone call/email to find out. www.northstarcampers.com/contact-us It's a nice Naugahyde(?) covered foam cut to a slight wedge shape so it fits snugly top to bottom. The foam is soft enough that vibration isn't transferred through from truck to camper so I've seen absolutely no where on the paint. I primarily use it to pre-heat/cool the camper while on the road. Open the rear vent, set the truck climate control to pull outside air (not recirculate) and the camper is very near the cab temperature when I pull over. It's also handy to get to items on the back seat from inside the camper. One of these days I really need to take some pics of it as frequent as this question comes up...