As shown as #2 in the assembled duct photo/diagram, this is the duct that mounts between the left-hand dash vent duct (#1) and the main under-dash distribution duct (#4). Only the #2 duct is included.
1968-1972 GTO / LeMans AC Air Conditioning Hose & Line Kit w/ Muffler & Fittings
68-71 Pontiac GTO LeMans Grand Prix POWERFLOW AC condenser with orings AC1790PFO
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REBUILT 69 GTO LeMans A/C HEATER CONTROL 1969 AC Air Conditioning Climate Temp
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REBUILT 70-72 GTO LeMans A/C HEATER CONTROL AC Air Conditioning 71 1970 1971