It should stick out 6" and requires 62" to swing the door fully open (90 degrees). I have a kitchen slide across from it so not a problem when this slide is out. Even with this slide in I will still have the same width as the hallway to the back, BUT will not be able to open the door a full 90 degrees... more like 60+.
One of the best reasons to go with the Samsung is it uses DC compressors so it works well on a MSW inverter. I'm putting mine on a separate 500 AH AGM battery bank with it's own 1000W PSW inverter and a 100A charger. Have the four new batteries mounted in the engine area and wired up. Still need to run a 120V wire to the refer area. Will have to take the driver's side window out to remove/install the units.