I bought one for our Vegas, but one of the fan vent covers was too close to allow it to adjust to the direction of the wind. Held on to it for 10 months and just threw it away last month.
It did fit over the septic pipe...
Sheree & Michael NCNG LTC(ret) with Munpi and Sheba (cat).
2016 Vegas 24.1 E350 5 speed "Ms. Enterprise", Bug-Guard Screen, Recliners, Infotainment Center, HUD, ARC Shower Rod, Safe-T-Plus, Curt SpareTire Mount,Tornado Black Tank Rinser, ext. WiFi Antenna, Roadmaster Tow Sys& Invisibrake.