Look for an aluminum tag--or a silver or white adhesive label. The model number may be printed or stamped onto the tag and it may be written in two different type sizes or styles.
Upright
With door open, mounted to an interior wall of the freezer.
With door open, mounted to the cabinet door jamb.
Behind the kick plate at the lower front of the freezer.
Chest
With door open, mounted to cabinet door frame.
On left or right side of freezer near the bottom of the cabinet.
On back of freezer near the top.