These are the Terrawagen ABS plastic cab window vents that will fit all 2007 to 2021 Sprinters. Get fresh air into your van while you are parked or camping. Also these can aide with fresh air coming into your van when used in combination with your existing electric roof fan. They have built in screens to keep the bugs out too.
These are tight fitting with no gaps and they won't rust because they are made from durable ABS plastic.
Roll down your window, twist and slip the vent in place, roll up the window and you're good to go.
Sold in pairs