Hey Steve! Your Atwood GE16EXT water heater is quite large and there is nothing right now that will be a direct replacement in terms of dimensions and capacity. I recommend switching to the Furrion RV Tankless Water Heater # FR68SR (white) or # FR42TD (black). Since this is tankless the hot water is virtually endless which is probably similar to what you're used to with the large tank you have now.
The Furrion has an 18" x 18" door which is designed to match the old Atwood. The required... view full answer...
Hey Brian, could you enlarge the opening a bit? If so, then yes you could install the Bauer RV door latch part # BA64FR but it requires a cutout that measures 5-1/4" wide x 4-1/2" tall. view full answer...