If you do a search, blue bar at top of page, for roof vents, I bet, you will be surprised at how much info there is.
There is a wide spectrum of views here. I like the roof vents that do not leak when it rains. Some have automatic controls with thermostats. Some of the old vents loook cool so consider fixing what you have.
The venders for parts are plentyful and competitive. Some parts are hard to find so when supply is scarce prices might be high. This forum can be very helpful and fun.
Congratulations on your "new" 69! The forums here are very helpful about roof vents. Another great source of info can be found at www.vintageairstream.com. That website has a section about Restoration Rescources and a subsection about repairing Roof Vents and Covers. I was able to find a replacement Astrodome for my 64 Tradewind at www.airstreamdreams.com but, according to what I've read, I THINK InlandRV might have one that fits the 69 a bit better. And, don't forget EBAY! I've become ADDICTED to that site for those random extra parts that I can't locate elsewhere! Good luck and welcome to the Forums!
I have the skylight roof vents on my '75 Sovereign, and they were in bad shape. With a little work, a sheet of plexi-glass, some vulkem, a drill and some rivets I repaired the orig. "glass" in the roof vents. No leaks, and now they actually let some light in.
Lowell
__________________
"For my part, I travel not to go anywhere, but to go. I travel for travel's sake. The great affair is to move."
Use Lexan instead of plexiglass. Lexan holds up much better....used it on sailboats for the same function. No need to spend much ordering something, just have a piece cut, tape and drill out the holes, caulk & rivet it in.
__________________
"would you rather have a mansion full of money or a trailer full of love?"