I need a new glove box liner for my '69. I don't have any factory A/C or heater, just a little Vintage Air heater/defroster in the center so I have lots of room. A couple of the restoration dealers show different liners for A/C cars and for non-A/C cars.

What's the difference between the two? Is one larger than the other?

 

The A/C box is shorter on the right side to allow the duct work to pass along on its way to the outlet.