what is this?

:happy3:
no..never heard of it

Wow!!! You must be really young. 260 a/c, is 2 vent windows open @ 60 MPH. A/C in the 60s and 70s was uncommon, for most of us. So we did with what we had. The vent doors, could blow out all sorts of junk, and keep the brew handy when thirsty.