This double headed CGF2 corner inserter unit offers insertion at both ends of the duct to limit the handling needed to fit all the corners. Corners are loaded into a magazine and flow freely into the insertion mechanism. A duct corner will be completed in 15 seconds, which would include the time to turn the duct. The insertion process takes 5 seconds per corner. It is expected that this unit will be set level with the floor for easy loading of ducting, especially the larger ducts.