Brenda H Granite , OK February 07, 2015 The vent came with no charcoal filters we bought it in oklahoma city they didn't have any for sale called the number in our manual referred me to an online appliance com Fitted the filters to the fans. That is not the easiest of installs. You cannot see where they go, you have to hook them into a pin of some sort. That pin was broken off one side of the fan. They are in place for the moment. "Hope" we succeeded. Pretty pricey investment for filters.. Also hope they last forever! Read More... Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes