Here in Virginia we have a huge problem with pollen from the trees during the Spring time. I've been fighting for years trying to keep pollen out of my cars and vent's. Now that I have a Challenger that can have the cabin filter I'm certainly getting one. I don't understand why they did not install the box that accepts a filter from the factory. The cost cannot be that much different besides the filter itself. Just called the dealer and they have it listed for $47.90.