Originally Posted by wanger99
I have a lead on 2 igloo coolers, one 5 gal and the other 10 gal.
I usually do 5 gal brewer with high OG beers.
I do 2.5-gallon batches and recently did a 1.111 OG RIS. My 5-gallon Igloo cooler mash tun was almost full. If you plan on doing 5-gallon high-gravity brews, I think you'll need the 10-gallon Igloo cooler.
Look at at the Green Bay Rackers Can I Mash It?
calculators for size of mash tun needed.