It depends on where the tanks are. On our rig, the main black and grey tanks are next to each other and are both the same size, 53 gallons. Our total grey capacity is listed as 93 gallons, so that leaves 40 gallons for the galley grey tank.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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