I’ve had this part stored in my bedside drawer for years and I can’t remember what it’s for.
My best guess is it’s from an overlocker that I no longer have(?)
SOLVED: It’s a hinge cover for a fridge freezer set that clips together to look like one large machine. Thanks to everyone that contributed.
Oh, that would be it! Thank you, we have a fridge freezer set that can clip together to look like one large machine and we never used it because it didn’t fit in our kitchen like that.