Gecko G201 heat sink question

If two Gecko drives are bolted to the steel 14 guage inner pan in my
NEMA 12 electrical enclosure will that provide an adequate heat sink to
run the drives near capacity? The pan is about 20" x 20" with a 1KVA
transformer and a bridge rectifier and couple of control relays, not
much heat.

Thanks for your input,

Terry