Cooler

We are looking to build a cooler. Wondering what size for 3 head? How big of a cooler system (tons)?

Pics?

14' deep at least. Depends on what all you wanna do in it beside let em stand and lay there. You tieing or letting them go to walk around? Probably 20' long. I can put 3 -4 calves in ours tied easy and it's 12x14. Only being 12 deep doesn't leave much room when they mature and for the cooler unit in the wall