This listing is for a NEW passenger-side (RH) flex hose for all 73-87 Chevy Pick Up and 73-91 Chevy SUV with factory air-conditioning. 

Shown as #10 in the assembled duct photo, this is the flexible flexible duct hose to connects the the right-hand (passenger-side) up the upper vent duct to the passenger-side vent duct assembly on the right side of the dash.  Made of durable cloth material.  ONLY THE #10 DUCT IS INCLUDED.