Rectangular Tanks

Seventy gallons of fresh water aboard an RV changes how you camp: boondocking stretches from a nervous weekend into a real week. The Ronco Plastics B296 carries that supply in a 34" x 23" x 23" block...

Fifty-five gallons in a 105 lb heavy-wall blank: the B351 is tankage as commitment. This is the molding for the boat that is being set up properly - a liveaboard's primary fresh supply, a...

The B439 gives you 40 gallons in a shell that ships at just 45 lb - the light-wall end of Ronco's 40 gallon options, tuned for sailboats and cruisers where every pound of fixed weight above the...

Look at the ratio on the B420 before anything else: 27 gallons of capacity carried in an 89 lb molding. That is a lot of polyethylene per gallon, and it is the point - this is the workboat-grade end...

Seventy-five gallons is expedition capacity - the 61W at 54 x 22 x 16 inches is the tank for rigs that measure trips in weeks. Four and a half feet long and 16 inches tall, it fills the long bay of a...

An S-shaped tank exists because the floor of a coach is not an empty rectangle. Frame members, axles, and plumbing chases carve the underfloor into odd channels, and the 80H is molded to snake...

The 81H turns a corner. Where most holding tanks are rectangles, this 62-gallon molding is drawn as an L, letting it occupy the dead space beside a wheel well or wrap the back of a step - underfloor...

The 86H is a 65-gallon holding tank for builds where the bathroom is not an afterthought - toy haulers with full showers, bus conversions, mobile grooming and service rigs. Sixty-five gallons of gray...

Seventy gallons puts the Ronco Plastics B153 at the top of Ronco's marine fresh water range - liveaboard and long-passage territory, where water capacity is measured in days of autonomy rather than...

The Ronco Plastics B154 is the second of Ronco's 70 gallon marine fresh water moldings, and the existence of a second one is the point: at maximum capacity, compartment shape is the constraint, so...

The Ronco Plastics B289 gives a cruising boat 65 gallons of fresh water in a molding that keeps its own weight down to 52 lb - a genuinely light shell for the capacity, and a real difference when you...

Replacing a corroded metal water tank is the classic reason a 44 gallon molding like the B414 gets ordered. Steel and aluminum tanks pit and seep from the inside out; a rotomolded polyethylene shell...