sowego wrote:
Yes they are all, at least the ones we've seen,two layers. It is good you had the inner if the outer is gone however, water was still able to enter the ceiling of your rig. You'll need to remove the inner, check for moisture and let it air dry before replacing both. If this rig is new to you...someone sold it to you that way?
I bought it as is, but it didn't come like the pic shown, there was just a small crack and small quarter size hole on the side of it, I pushed on it and it crumbled like a potato chip. The inner cover is clean, pliable, and there is no indication of water every being in between these two covers. The outer cover is approx. 26x18
and it look like I can get a decent one here
http://www.pplmotorhomes.com/parts/rv-vents/31-3154pp.htm
Or I may just order one from Fleetwood if need be.