The Chem-Tainer 210 Gallon PE Rectangular Open Top Tank is a polyethylene rectangular open-top vessel built for above-ground water storage, batching, washdown, and reservoir duty where you need straightforward top access to the contents. With a 210-gallon working capacity and an open top, it suits filling, dipping, mixing, or visual level checks without a sealed lid in the way. If you have searched for a rectangular open top tank or simply an open tank in a rectangular footprint, this is the configuration that answers it. It ships LTL freight from the Chem-Tainer plant in West Babylon, NY, with the carrier cost quoted live to your ZIP on the Freight Cost Estimator.
Will it work for your application?
This is a polyethylene tank rated at 210 gallons of water service at standard 1.0 specific gravity. At full water capacity it carries roughly 1,751 pounds, so plan your pad and supports for that loaded weight, not the empty shell. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm 210 gallons matches your daily draw or batch volume, and verify the rectangular footprint against the floor space or containment area you have before ordering. If you intend to store anything denser than water, confirm the contents and specific-gravity requirement before you order, since this SKU is scoped to water-weight service.
Siting and support
An open-top rectangular tank wants a flat, fully supported, level base across its entire footprint. Polyethylene flexes under load, so a continuous surface, not point supports or spanning beams, keeps the walls true and avoids stress concentration as the water weight bears down. Treat 1,751 pounds as the design load your base must carry across the full rectangular footprint. If you are setting this on a concrete pad above ground, our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI framework for sizing that base correctly.
Where it fits in a water system
Open-top rectangular tanks earn their keep as collection, settling, and aggregation vessels. If you are building a reuse train, the guide on industrial water reuse tank topology covers how grey-water, rainwater, and HVAC condensate streams stage through quality-banded storage. For rural fire-protection storage, the fire-water reservoir design guide addresses NFPA 22 sizing discipline and cold-climate freeze protection.
The mistake to avoid
The common error with an open-top tank is treating it like a sealed, plumbed vessel. This unit is configured open top and ships as a bare open-top tank with no factory fittings in our data, so it is built for top access and gravity or pumped draw, not pressure service. Any outlet or bulkhead is a field-added accessory you spec yourself, so match it to the actual water duty and keep loose lids or covers off the structural-load path. Confirm the rectangular footprint against your space before ordering, since rectangular tanks are usually chosen specifically to fit a wall, corner, or doorway where a round tank will not. Check the technical drawing on this page for the dimensional layout.
This tank ships LTL freight from West Babylon, NY, the nearest Chem-Tainer plant for this SKU, with the carrier cost quoted live to your ZIP. Get your number on the Freight Cost Estimator, or call 866-418-1777 and we will quote it for you and confirm fit for your application.
