Just discovered the top shelf has two separators......one for 3-1/8" wide ice tray(s) and another that measures 9-1/2 x 12-1/2 inch for an ice bin. Went ahead and ordered Norcold part number 619007 Clear Ice Bin for this unit even though it was advertised as 9-1/2 x 12-29/32 inch, slightly too large for the space, thinking the size was a miss print. It arrived today and discovered it actually measures 7-1/2 x 8 inch so it fit!!
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1