Grant - this heater? - if the "deflector" missing is the one at the bottom facing the kick panel, that's the intake - the part that distributes the heat is the plenum to the left, which has some vanes in it to direct the heat down - also has the defrost control that cuts heat to the floor in favor of up to the windshield

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics