Rectangular Tanks

A 36 gallon tank that weighs 34 lb empty: the Ronco Plastics B478 holds more than a pound of capacity for every pound of tank you carry aboard. That efficiency comes from rotational molding done...

Twenty-one gallons in a 27 lb package makes the Ronco Plastics B490 one of the easiest tanks in the marine line to live with: light enough to install solo, compact enough for genuinely small...

An 83 lb blank holding 23 gallons: the B499's spec sheet reads like a small tank built to a big tank's standard, and that is exactly what it is. Ronco pours wall into this molding, which makes it the...

The Chem-Tainer 45 Gallon PE Rectangular Open Top Tank is a compact polyethylene vessel built for water handling where you need open access from the top and a footprint that fits against a wall or in...

Among Ronco's several 58 gallon moldings, the 63W is the compact one: 42 x 23 x 15.5 inches, the shortest length in the class. Trimming half a foot from the long dimension is what lets this capacity...

Ronco molds more than one 32 gallon marine water tank because boats disagree about where 32 gallons should go. The B143 is one of those shapes - same capacity class, its own footprint - and at a 46...

The Ronco Plastics B169 holds 28 gallons and ships at 36 lb, which places it in the sweet spot of the marine fresh water range: enough capacity for real cruising days, light enough to maneuver into a...

The B190 is a 30 gallon marine fresh water tank that ships as a clean blank. The molding itself is polyethylene intended for potable service, rotomolded in one piece so there are no seams to weep...

Most tank replacements fail at the tape measure. The original went in before the deck did, and the hatch it has to pass through today is smaller than the tank is. This is where a catalog like Ronco's...

Thirty-two gallons sits in the gap most builds actually need - more than a weekend tank, less than a locker-eating cruiser tank - and the B258 fills it with a bare marine molding shipped entirely...

The number that tells you what the B329 is: 96 lb of polyethylene wrapped around 26 gallons. Most tanks this size ship at a third of that weight. All that extra material is wall - a heavy,...

Ninety pounds of shipping weight on a 32-gallon tank is a specification hiding in plain sight. The B331 is one of Ronco's heavy-section marine moldings - nearly three pounds of polyethylene per...