For those of you needing to replace the original Sharp Carousel Model R-7A85 in a 2000 Airstream Excella and likely other model years, the replacement model from Sharp is R820BK and is available online through Home Depot with free shipping for $264. I completed this yesterday and the original Trim kit works on the same model. I had received the trim kit part number from Airstream which is #690345-03 but will not need it. The new unit has a "grill" option so will be a nice upgrade.