to blow cold air in the back too since the Malamute likes it pretty cool
when living in Rio de Janeiro, Brasil it was pretty warm most of the year.
what we did on our 110 was to install the dog guard behind the rear seat and then attach a clear plastic sheet over it.
when the windows were open, we rolled it up.
A/C on - rolled down
attached it to the sides of the guard with a small diameter rope and installed grommets in the plastic sheet.
this did 2 things:
1. kept the warm/hot air in the rear area.
2. greatly reduced the area to be cooled.
to add to Ron's comment, rear air was an option on 110s, yet, it really cooled the rear area versus the middle section where our 2 Labs sat.
feel sure it would have helped, however, blocking that area off seemed to work pretty well.
Jaime