[Healeys] mystery flap

[ruvino at ripnet.com]

Just back from Stowe in the heat inside and outside of the car. Recently “insulated” everything under the carpets but my feet were burning after 5 hrs of straight driving.
Hunkered down under the steering wheel to see how I could insulate the metal panels around the levers for the clutch and brake only to discover a permanent open flap right next to the cold air vent and the heater vent. What is the function of this flap other than to burn my feet up?

Carl
BN-4
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