does my truck have a Blend door?

[modelageek]

I do not have AC in my Rig.....I assume I do not have a blend door but I was wondering if anyone knows for sure....

 

[cammeddrz]

all vehicles newer than like 1970 have a blend door. it blends/selects between straight-hot, and outside air.

 

[modelageek]

all vehicles newer than like 1970 have a blend door. it blends/selects between straight-hot, and outside air.

thanks