If you remove the screws from the interior frame, and then remove the frame from the wall… there should be a part number label located along the inner channel. Once you have that, you may then be able to Google it, and find a supplier online. But even if you can’t… with that part number, any auto-glass shop should be able to find you a replacement from their suppliers.
2013 VOLTAGE 3200 (EPIC I & II)
2014 Ford F-450 PLATINUM
2018 BMW R1200GS RALLYE