Originally Posted by drvol
I was looking into this as well...found what I wanted at RV Wholesalers but waited to order until I got home last night to check up on the roof to see how installation would go. I found out that the vents themselves...or atleast the sil around the vents are covered very heavily with the sealer FR applies upon manufacturing. I was under the impression that these covers were bolted to the frame/sil that goes around the vent. There is no way I can attach these covers without removing the sealer/caulking or I have to drill into the roof around the vents. I have a 2011 Shamrock 233s. Is this something new or am I missing the intent to install?
The covers are bolted with 8-32's or something close to that size. Don't remove any caulking around the vent. The caulk is soft, I pushed the mount brackets into the caulk a bit and then drilled holes in the side of the vent cover (not the roof). The vents don't have to sit tight on the roof (mine are off about a 1/4" - to me this is fine, the vents won't rub on the rubber roof). Get the maxxair 2's you can open and clean underneath very easily.
My two cents....