This high-limit thermostat (part number WP3977767) is for dryers.
High-limit thermostat WP3977767 shuts off the heating element or burner when the dryer overheats.
Disconnect the power before installing this part. Wear work gloves to protect your hands.
WP3977767 (or 3977767)
The manufacturer substituted part 3977767 with this new part WP3977767