Can-Filter Flanges 6IN FLANGE / CAN The flange is used to connect the Can-Filter to the ducting or Can-Fan, this is for airflow out of the ventilated area. Flanges range in size from 4 - 12 inches depending on your specific needs.  | Manufacturer's Product Information |  | | | 2007 MSRP Each $ | 25.95 | | Case Weight | 1.15 LB | | Case Dimensions | 12. x 12. x 2.75 IN | | Case Quantity | 1 | | |