Home-improvement: after six months you get tired of going back-and-forth once or more per week to the campground’s laundromat. What to do? You drill a 4 ¼ inch hole through the side of your RV to install this awesomeness.

For those of you who may be wondering what the inside of your modern RV walls look like, take a close look at the core. It’s two sheets of 1/8 inch plywood, a bit of foamcore, and some fiberglass and gelcoat. It’s incredibly light and astonishingly strong.