Polarbear, I believe you will discover all Airstream trailers are 6'7" from floor to aluminum ceiling. Deduct 3" for the those with an air conditioner (without ducting) and you arrive at 6'4" minimum clearance. I am 6' 3.75" and have only brushed my hair when passing under the AC unit in every unit I have been granted visitor rights to during an "open house" tour. Bed length and toilet use on the other hand is the issue for those of us height challenged.
"Good judgement comes from experience. Experience comes from bad judgement."
Air #48582, S/SO #003, WBCCI #4584