The Ronco Plastics B508 closes out this run of the B-series with 60 gallons in a 48 x 25 x 13 inch profile, a big-capacity tank that still ducks under a bunk. Thirteen inches of height is the difference between building a tank compartment and simply owning one.
Like every B-series molding it is dual-role. Ordered with fresh water fittings, the food-grade polyethylene stores potable water for genuinely long stays aboard; ordered with waste fittings, it becomes a high-capacity, low-slung gray or black holding tank. Ronco installs each fitting per order, spin-welded or threaded exactly where your marked drawing calls for it, so the shallow top deck carries only the ports you actually need.
Design for about 500 lb of water at 8.34 lb per gallon at capacity, spread across the long footprint, plus the tank's 102 lb. Continuous support under the full length, straps over the top, and the job is done once. Print the dimensioned drawing below and finish the layout in the on-page fitting planner.
Molded in Tustin, California by Ronco Plastics, molding tanks since 1974. Compare formats across the boat tanks and RV water tanks, check the holding tank line for committed waste roles, and price freight at the freight cost estimator. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B508 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.
