Looking for holding tank capacity info for 1968 Barth trailer (22ft model). Was told both fresh and black tanks are 12 gallons each. Was also told both are 10 gallons each. Either way they're on the small size. Are specs available online?

https://www.barthmobile.com/eve...31087061/m/688101032
Found didn't read if the link doesn't list capacities I bet you will find it interesting.

Kuhl, as Rusty used to say. Thanks for digging that up. Look at how "expensive" postage was.

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Thank you for attaching the literature. It was interesting reading. I saw 20 gallons mentioned for fresh water tank and "large heavy duty vented fiberglass waste-receptacle" for black water tank.

My first small trailer had black and gray both to a single tank.

If you can measure the tank in inches - HxLxW/231 will give you the gallons.