This info was copied from the Dometic web page, I hope it helps...
You can order parts directly from Dometic by calling the retail sales department at 1-800 544 4881. Please be sure to have your model number available so the correct parts list can be obtained. Thank you
If you are in need of any Dometic refrigerator, air conditioner or A& E awning parts you can also call us at 1-800-544-4881 or purchase from any Dealer or Camping World location.
If we can be of any future service do not hesitate to contact us.
Thank you for choosing Dometic product lines.
Customer Support Center
customersupportcenter@dometicusa.com