The glass tray in 2006 AS Dometic microwave microwave broke a couple of years ago when on a trip.
I checked at Camping World for a replacement and they told me they could order a new one for about $70 - plus I would have to pay some exorbitant amount for shipping.
Instead, I tried a few local charity shops and found all kinds of microwave trays that seems as though they should work for a coupe of bucks each.
Turn out however that the drive on the Dometic uses a sort of three legged spider with wheels on the ends. The glass needed to have a "track" molded in to match the radius of the wheels and without that, they trays I found would not work properly as the tracks they had were slightly different.
I thought about modifying the spider to change the radius of the wheels, but a search on the internet suing the model number of our microwave turned up a place in California where I was able to buy the correct replacement for about $20. Shipping was not expensive.
Brian & Connie Mitchell
2005 Classic 30'
Hensley Arrow / Centramatics
2008 GMC Sierra SLT 2500HD,4x4,Crew Cab, Diesel, Leer cap.