One of the easiest ways to provide fresh air for proper fan operation is to include a window into the design of your van. This will help direct fresh air inside the van, and can also add natural light inside the small space.
Some builds install large windows on both sides of the van, while others choose to rely on a single smaller window to maintain some sense of stealth while camping in urban areas.
Popular window manufacturer’s include C.R. Laurence (CRL), oem windows from Ford, Dodge, Mercedes, Dometic, and Motion Windows.
Here are some common options for van conversion windows:
Sliding Bunk Window
A long, rectangular window with integrated bug screen and sliding glass pane. Perfect for beside a raised platform bed.
T-Vent Window
A larger window to be mounted on either a sliding side door or main side panel. The best option for increasing natural light in the van, with small tilting vent built into the design.