81 lb empty for 16 gallons. Read that again - the B111 blank outweighs the entire full load of some small tanks before a drop of water goes in. This is the heaviest-built 16-gallon marine molding Ronco offers, wall thickness taken to the point of overbuild, for workboats, charter hulls, and installs where the tank doubles as ballast and the owner never wants to think about it again.
Underneath the armor it is still a proper potable tank: FDA-compliant polyethylene, seamless, rated for drinking water - or order it with waste fittings and it becomes the most indestructible small holding tank you will ever install. Full, tank and water together, you are placing about 133 lb of water on top of that 81 lb blank, so mount to structure and size the shelf generously.
Like everything from Ronco's Tustin, California plant since 1974, fittings are installed per order - spin-welded or threaded at your marks. Print the drawing below and mark the fitting locations, or use the on-page fitting planner. Given the weight, check your lane on the freight cost estimator before ordering. Lighter 16-gallon siblings are in boat tanks; the whole family is on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B111 dimensional drawing - print it to plan your install and mark exactly where you want fittings located; Ronco installs spin-weld or threaded fittings to your marked spec.
