Foundation vents can be as simple as sheet metal with louvers cut into
them or plastic, to hinged devices with thermostats attached to
open/close depending on temp.
Either way, they are probably just nailed or screwed into the wooden
frame set into the foundation. If they can be removed cleanly, you may
be able to bend or hammer it back into shape. If not, they are pretty
cheap to replace at the local Home Depot or Lowes (in the
Let us know if you have a different situation,
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