The Defender Demister is a product that fits most Defenders, wide vent version from approximately 1993 onwards.
It works by controlling the existing air flow, distributing it to the areas that need it most... your front and side windows. Fitted in about 30 seconds using a couple of screws, no drilling or complicated processes. All you need to fit them is a screwdriver!
The Defender Demister REDUCES both side windows AND SCREEN are mist and condensation, thus improving visibility even in the worst weather conditions.