This is the pipe that goes from the front of the heater channel up the A post to the bakerlite 3 way joiner for fresh air to the windscreen.
Fits VW Beetle air cooled 1966 on
Also fits 2 way joiner 1200cc 1966 on
Please check the size on your vehicle as there is more than one size used.
This pipe is 38mm wide and is 400mm long, but comes in a compressed length easy to stretch to length.