RV Vent SV-5 replacement options: Vent SV-6 and Vent SV-7 - Van's Aircraft The Vent SV-5 fresh air vent director mechanism is no longer manufactured or available and has been replaced by the Vent SV-6 (aluminum) in clear or black coating, as well as the Vent SV-7 (commercially 3D printed black plastic) vents. This video shows and demonstrates these three available options.