The Chem-Tainer 180 Gallon Rectangular Open Top Tank is a straight-walled, molded plastic vessel built for above-ground water storage, batching, and open-access work where you need to see and reach the liquid level. As an open top tank, it fills, mixes, and empties without fighting a sealed lid, which makes this rectangular open top tank a practical fit for wash stations, holding, and staged water processes. Listed at 180 gallons, this open tank answers the three questions that matter before you buy: does it fit the job, what does freight look like, and where do people go wrong with a rectangular tank like this.
Does it work for your job?
This is a rectangular open top tank rated for a nominal 180-gallon working volume of water, and its flat-walled footprint sits against a wall or into a corner more efficiently than a round tank of the same capacity. Filled to the top with water, plan for roughly 1,501 pounds of load. That single number drives everything under the tank: the pad, the floor, and the supporting structure all need to be rated for the full water weight, not the empty shell. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm the working volume you actually need, and see the technical drawing on this page for the tank's dimensions and outline.
Setting it up right
Because a full open top rectangular tank concentrates well over half a ton of water across its base, it belongs on a flat, continuous, fully supporting surface. For a slab install, our guide on concrete pad sizing for above-ground plastic tanks walks through how to size that pad for the filled load. If this tank feeds a reuse or aggregation setup, the industrial water reuse tank topology guide covers how quality-banded storage trains fit together.
The mistake to avoid
The most common error with an open top tank is treating it like a pressure or closed vessel. This tank is vented by design; it is not built to be sealed, pressurized, or plumbed for a closed head. It ships with no factory-installed fittings listed, so any outlet or overflow is field-added by your installer. Confirm those locations against your plumbing layout before you cut anything, keep the load static, and size your pad for the filled weight rather than the empty tank.
This tank ships LTL freight from West Babylon, New York, quoted live to your ZIP code. Get an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it with you. Have your delivery ZIP and any dock or access details ready so the freight quote reflects real conditions at your site.
