How to install an air conditioner in a camper van

Sorry you have lost me. Your short abbreviated statement makes no sense.

Are you talking about being illegal for travel or when its setup for camping?

Its put away inside for travel so doesnt protrude then.

Please post a copy of relevant laws that are being broken so we are all the wiser - thanks

Yes Illegal when on the road...i was unware it goes inside when when travelling

It would have been rather difficult for the owner of that particular camper to travel with it in the installed position, as it is shown in the photo in an A'van Camper. These campers are folded up and look much like any wind up type Camper Van when they are in travel mode. The Avans have been around so long now and are easily spotted by their A shape when erected.

There is also a note of caution in the article that should be read to prevent damage to the A/c. Actually its probably best to read the whole article before judging if it suits your particular application.