Hey, those are pretty cool! Expensive, but they can fit through a standard doorway...

-Blast

Just last week I was trying to decide which size Berkey to order. I like the option to add more filters/cartridges to increase filtering speed so I'll likely get one that will handle 4-6 filters.

Thanks for the informed review.

It has always been my understanding that 1 gallon of water per person, per day, is the bottom line MINIMUM.