I had a Very frustrating time replacing my screen on my Ventline roof vent. As it turns out the company has changed the construction of the screen assembly. I originally bought my vent from Vintage Trailer Supply about 5 years ago. The screen looks like the first photo looking up. I recently called up VTS for a replacement screen and they sent me one right away and really cheep. The last picture is what I got. I was slightly confused and frustrated. So I made some calls and finally talked to some one who knew what they where talking about. The metal top roof vent model # is V2110. The part list is the 2nd pic. Part # BVD0434-31 is the replacement screen and outer assembly. The two parts needed are the 3rd pic. The nice thing is the screen is removable for cleaning. I installed mine and was an easy deal.
Ever notice an Airstream resembles a piggy bank