I am setup for a 10-12 gal batch.
16 gal up top (hlt). 70 qt cooler as a mash tun. another 16 Gal as my boil kettle.
Usually do a batch sparge, so efficiency is about 67 percent.
Scottish
Oktoberfest
IPAok
Pollinator IPA
Nate's Honest Pale Ale
Raspberry Joy Ale
Dave's Honest NSA (non-shudder ale)