Hello,
I didn’t find a model that matched the one you gave. Is it possible you meant the Hatco GRSDS-30D food display warmer?
If you did mean the GRSDS-30D, you can find the end glass panel here: Hatco 04-40-038 END PANEL,GLASS,GRSDS-XXD | Parts Town
Also for your convenience, please find both the owner’s manual and the replacement parts list for all Glo-Ray Merchandising Display Warmers here:
http://download.partstown.com/is-bin/intershop.static/WFS/Reedy-PartsTown-Site/-/en_US/manuals/HT-GRSDS-SERIES_iom.pdf
http://download.partstown.com/is-bin/intershop.static/WFS/Reedy-PartsTown-Site/-/en_US/manuals/HT-GRSDS_pm.pdf
Have a great day!
John