The Chem-Tainer 112 Gallon Rectangular Open Top Tank is a straight-sided, open-top polyethylene tank built for batching, washdown, parts rinsing, and general water storage where you need full top access to load, mix, or dip. The open top means no lid restriction on what you drop in or scoop out, and the rectangular footprint packs more usable volume into a tight floor space than a round tank of the same capacity. This is a straightforward water and general-purpose holding tank, so match it to the job by capacity and footprint, then plan for how you will fill, drain, and support it.
Does it work for your job?
This tank holds 112 gallons of water and is molded from polyethylene. Filled to the brim with water it carries about 934 pounds, so the pad or platform under it has to be flat, continuous, and rated for that load with the tank full. Open-top rectangular tanks like this one are commonly searched for as a simple open tank for rinse lines, batch make-up, or catch-and-transfer stations, and the open top means you should plan for splash, evaporation, and debris if it sits outdoors or under process spray. If you are unsure whether 112 gallons matches your fill-and-draw cycle, run the numbers with our Tank Sizing Calculator or read the Tank Sizing Guide before you buy. This model ships as a bare open-top vessel with no molded factory outlets, so every penetration — bulkhead fittings and their gaskets — is field-added and must be sized to your pump and hose for a leak-free outlet. See the technical drawing on this page for the tank's molded dimensions and wall detail.
Support and installation
A rectangular open-top tank needs full-bottom support, not point contact — the flat floor of the tank should rest on a level surface across its entire footprint so the water load spreads evenly. If you are pouring a slab, our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI framework for getting the base right. For cold-climate service, an open-top tank freezes from the surface down, so plan freeze protection early — our fire-water reservoir design guide covers freeze-protection engineering that applies to any outdoor polyethylene water tank. For reuse and aggregation setups feeding this tank, see our write-up on industrial water reuse tank topology to plan the collection train around it.
The mistake to avoid
The most common miss on an open-top water tank is treating it like a sealed process vessel. This is an open, atmospheric container: it is not pressure-rated, it is not sealed against fumes or contamination, and it should be sized so it never overflows during a fill cycle since there is no lid to contain a surge. If your application involves anything beyond water or mild aqueous solutions, confirm chemical suitability separately before you commit — this is a water-service tank. And do not undersize the base: at roughly 934 pounds full, an unlevel or undersized pad is the fastest way to stress or crack the bottom.
This tank ships LTL freight from West Babylon, New York, quoted live to your ZIP code — freight class and cost scale with the shipping profile, so pull an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you and help confirm the tank fits your job before it ships.
