100 Quart/25 Gallon Kettle by Update International.  18/8 stainless steel.  Induction ready.  Heavy duty 3 Ply bottom.  Includes riveted handles and cover.

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Update International (SPS-100) 100 Qt Induction Ready Stainless Steel Stock Pot w/Cover – multiple sizes available

Also: Induction Heat Sources for Home Brewing via Brew Your Own Magazine

Also: 5 Recent Kettle Finds