25 Quart (6.25 Gallon) Party Stacker Cooler from Coleman  25 Quart Capacity.  Holds (24) 12 oz Cans + Ice.  Wide base fits warm serving dishes.  Stacking design for easy storage and organization.

It doesn’t look this has a drain, so this may not necessarily be great for a mash tun.  This is more of a cooler-as-a-cooler vs a cooler-to-be-converted-to-a-mashtun sort of a cooler.  You could use this to keep your homebrew or favorite draft beer (and more) cold.

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Coleman 25-Quart Party Stacker Cooler

Also: 10 Gallon Mash Tun Conversion Kit [Review] | Portable Draft Serving Options | Cooler Shock Gel Packs – these are awesome

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