by madjack » Sun Jun 14, 2009 7:13 pm
K, the flange sits on TOP of the trailer...a garnish/trim ring goes against the inside of the ceiling, extending into the vent body...make your opening 14.25"x14.25" and the framing 1.5" wide...if you don't do this, you may well have problems fitting the vent into the hole and the screws into the framing.......
madjack

...I have come to believe that, conflict resolution, through violence, is never acceptable.....................mj