All-metal heater air duct as used on pre-1966 models, welded to the engine side of the front panel. Predated the plastic 24A1967 duct introduced in mid-1966. Metal gauze keeps out leaves, bugs, etc; primed in grey, can be painted black or to match your paint scheme. Sold each. Ref: 24A1301.
See also SCO0024 fresh air intake kit.