70 Quart (17.5 Gallon) Igloo Xtreme Cooler. It appears to have a drain, so you should be able to convert this into a large mash tun.
As of this posting, Wal-Mart has this marked down to $41.20. Shipping to most US addresses is also free. Price, shipping and availability can change quickly. Check the product page for up to the minute price and availability.
Update: This promo has expired or pricing, availability or description has changed – Check the supplier’s site or product page for current availability
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