I have a 70qt coleman xtreme cooler that I turned into a MLT. I used it for about 10 batches or so until I got a keg base MLT. The copper manifold is not soldered together and I never had an problems with it. I could solder if the buyer wants it. The cooler does have a lid. I can include either a 1/2" or 3/8" hose barb with it. The ball valve is brand new.
Asking $50 pickup only since I do not have a box big enough to ship.