Joe -
TrailManor has changed their specs page, and I admit I'm confused by what is there and what is missing (such as the "add for airco" spec). But I'm thinking that 14.25 inches for the low-profie air conditioner is too much. On mine, the air conditioner stands a bit more than 13 inches above the roof, but only 8 inches above the domes for the roof vents - the Fantastic fan and the passive crank-up vent. Since the vents are standard equipment, I would assume that they are included in the baseline height measurment.
You might be OK. Have you gone through these threads?
http://www.trailmanorowners.com/foru...ight#post97291
http://www.trailmanorowners.com/foru...ead.php?t=5571
You will be close, but you might make it.
Bill