GHE Happich, Perohaus and Volkswagen produced a few nice accessories for the VW Beetle vent window.
The VW Beetle vent window REGUS Rainguard Accessory from GHE shown at the first picture protects the driver and front passenger with vent wing window open against rain and drafts. No more rain streams on the doors and no water splashes to the clothing.
Here picture of the VW Beetle vent window Rainguard "REGUS", the VW Oval vent window Anti Theft Accessory "RIFI" and the VW 1200 1300 1500 Bug vent wing window wind deflectors "BREEZES".
VW Oval Bug GHE Happich vent window rainguards
VW Oval vent window Anti Theft Accessory Rifi. The VW vent window anti-theft accessory was reviewed by the Advisory Board of the State Criminal Office Baden-Wuerttemberg. WOW!
VW Bug GHE Vent Window Anti Theft System, GHE Happich VW Bug Accessories Catalog 1964, Page 33