These rubber seals are required only if you do not have windows and are cutting them in. The seal is required to set the gap of the glass to the body of the van and hides the pinch weld on the inside of the van. If you already have fixed windows on your Sprinter, you can re-use the seals you have.
Pricing is per seal, add a left and a right if you're buying a pair of slider windows. (Item #2 in the pic)
