It has a remote control and four outlets in the cab. it fits directly to the roof of the cab usually in the roof hatch hole, Unfortunately my Tatra does not have a standard roof hatch, As the cab was originally a military cab It has a gunners hatch.
Now, as much as i like the idea of a gunners hatch in my off road camper i feel that in reality there's probably no need for it. So i set about modifying it to take the air conditioner instead.
the hole had a 20 mm flange that sticks up from the roof in order for the hatch to fit over it and seal, i had to cut this off and grind it back to the roof level, the remove the hinges that were welded to the roof for the hatch.
Once the aperture was ready i made an adapter plate from 3mm aluminum that would fit to the roof aperture and take the air conditioner unit.
This plate will be sealed to the roof with sickaflex and sealed rivets.