upgrading suburban sw12de water heater in 2012 Keystone Montana with Fogatti tankless water heater
Published 09/18/2025
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Question:
I’ve got a 2012 Keystone Montana fifth wheel with a Suburban SW12DE. Will the Fogatti FG38FR cover that larger cutout?
asked by: Dave
Expert Reply:
Dave, you’re in luck - the Fogatti # FG38FR with its 18" × 18" black door is designed for larger Suburban replacements like your SW12DE. The cutout behind the door may need slight shimming, but the service door covers perfectly. If you’d prefer white, that’s the # FG58FR. Many RV owners make this swap for the endless hot water, so you don't have to wait for the tanked units to heat up. Most people go with these now days since they are a better technology and much more efficient as well.
Have you already measured your cutout depth to be sure you’ve got the clearance for the new unit?
Product Page this Question was Asked From
Fogatti InstaShower 8 Plus RV Tankless Water Heater - 55,000 Btu - 18" x 18" Door
- RV Water Heater
- Tankless Water Heater
- Propane
- 40001 - 55000 Btu
- 12 Volts
- 13L x 13W x 13-13/16D Inch Cutout
- 14-5/16L x 18W x 18D Inch
- Black Door
- Fogatti
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