Build your own Rain Bench® that holds 65 gallons of water, and 2 people.
(the water in, the people on)
The actual capacity of the liner that is included is up to 140 gallons, which means if you simply build a bigger box, it will expand to the size (maximum 32″L x 32″W x32″h) and hold a ton of water.
Ok, it will only hold 1,120 lbs, or a little over half ton of water if built to max capacity.
That’s a lot of water. (Tip: If you want to put one on your deck, make sure it was built to hold a hot tub. We recommend setting it on a level bed of permeable gravel instead)