hard to tell just what that is, but it appears to me to be a DIY repair - the images Eric references from Alan may help you sort it out, you may need the lower pillar patch or the lower hinge pocket or the lower section of the air plenum with the drain

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