The '62 model Beetle has unique heelboards with an oval-shaped cut-out at the bottom. This cardboard pipe ducts hot air from the main metal pipe, out through these rear, oval outlets. (If you look closely, you can just see the oval cut-outs in the bottom right corner of this picture)...
47 Beetle, 56 UK Karmann Cabriolet, 56 UK Beetle, 57 UK Type 2, 59 UK Beetle, 66 UK Fastback.