Replacement Convection Microwave for Advent MW912B in 2015 Forest River FR3 25DS
Updated 09/17/2026 | Published 09/12/2026
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Question:
I am trying to replace an Advent MW912B with a convection microwave. It is over the range in a 2015 FR3 25ds.
asked by: Deb N
Expert Reply:
Hi Deb! We don't have a direct-fit convection replacement for your Advent MW912B, but the closest option is the Greystone Built-In Convection Microwave # GR27FR. It measures 21" wide x 11" tall x 15-3/4" deep, or about 14" tall with the vent installed.
Another option is the Furrion Convection Microwave # FR77AD, which requires a 21-7/16" wide x 14-5/8" tall x 16-1/8" deep opening and includes the trim kit. I recommend measuring your existing opening and comparing it to these dimensions. Some modification may be required to get either one to fit.
Any big trips coming up with the FR3 this fall?
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Product Page this Question was Asked From
Greystone Built-In RV Convection Microwave - 1.1 Cu Ft - Stainless Steel
- RV Microwave
- Convection Microwave
- Built-In Microwave
- Trim Not Included
- 1.1 Cubic Feet
- 21W x 11T x 15-3/4D Inch
- Stainless Steel
- Greystone
more information >
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Tony S.
9/17/2026
Hello. While wintering in Florida 2026 my original Airstream Sharp dies after 20 years os use. I ordered the GR27FR based on its dimensions - that it would fit in the old cabinet space. Wrong choice since this model does not come with a trim kit and the old Sharp trim kit did not work. . I should have gone for the $530. Furrion model that comes with a trim kit. I was able to get a trim kit for my GR27FR but had to find a different retailer. An unneeded process.