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Old 07-29-2020, 03:02 PM   #1
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Join Date: Jul 2020
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Tank sizes

I have a 2019 Grand Design 351M toy hauler. It was supposed to have 1 black tank and 1 grey tank. After purchasing I learned they added a third tank for the rear 1/2 bath. Trying to find the capacity of the ranks

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Old 07-30-2020, 10:08 AM   #2
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Welcome to the forum.
Since the specs on the website don't address the 2 tanks, best bet is to contact GD Customer Service? OR--get a water meter to attach to the hose and use it to fill the tank. This will give a good idea of each tank capacity.
Good luck.
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