Quote:
Originally Posted by RMcNeal
I have a 2019 3791RD, same unit with residential fridge.Bkack water is 49 gallons and grey is 88 gallons, 2 @ 44 gallons each.
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I believe the total grey capacity is 88 gallons. But I don't believe the two tanks have equal capacity. The shower tank sits next to the black tank and is identical in dimensions. The replacements for each is the same part. The galley tank is located above the axles, in the non-dropped frame area, and likely has less depth than the other tanks. I conclude the shower tanks is 49 gallons and the galley tank is 39 gallons. I haven't had to replace the galley tank so I don't know for sure.