The Chem-Tainer 30 Gallon PE Rectangular Open Top Tank is a compact polyethylene reservoir built for batching, washdown, parts soaking, and any job where you need an easy-fill, easy-access rectangular open tank at a 30 gallon working volume. The rectangular footprint sits flat against walls and in corners where a round tank wastes floor space, and the open top means you load, dip, stir, or net out of it without fighting a small fill port. This is a straightforward open top tank for water and water-based handling.
Will it work for your job?
You get 30 gallons of polyethylene construction in a rectangular open-top format. Plan your stand and floor for the loaded weight: 30 gallons of water alone is roughly 250 lb, so the surface underneath has to support that water load plus the empty tank itself, not just the water figure. Because it is open top, it is not a pressure or fully sealed vessel - it stores at atmospheric pressure and is meant to be filled and drawn from the top. Rated for water and water-based fluids; for anything heavier than water, confirm specific gravity against the drawing and spec before you put it into service. If you are sizing a reservoir and want to confirm a rectangular open top is the right shape and volume for your process, run the numbers through our Tank Sizing Calculator and review the Tank Sizing Guide before you commit.
Specs and what to check
For exact outside dimensions and wall detail, see the technical drawing on this page - it shows the rectangular open-top profile so you can verify the unit fits your bench, secondary containment curb, or equipment skid. This tank ships with no fittings installed, so it arrives as a bare, undrilled vessel: any bulkhead, uniseal, pump, or drain you add must be sized to the actual wall thickness shown on that drawing, and paired with a gasket rated for your fluid. The most common mistake on an open-top rectangular tank is treating it like a sealed storage tank - it has no lid-sealed top by default, so for outdoor or dusty environments plan for a cover and account for evaporation and debris.
Open top vs. full drainage
An open-top rectangular tank is ideal when you fill, dip, or pump from the top and floor space is tight. If your process instead needs to fully drain residual rather than draw off the top, compare this against a draining design in our guide on Chem-Tainer cone-bottom tanks, 30 degrees vs 45 degrees drainage before you decide.
Freight and how to order
This tank ships LTL freight, quoted live to your ZIP. It stocks at our Delano, MN and West Babylon, NY plants, and your order routes from the location nearest you to keep transit and cost down. Get a real number for your address with the Freight Cost Estimator, or call 866-418-1777 and we will work out the closest shipping point and the best way to crate it. For larger above-ground installs, our guide on concrete pad sizing for above-ground polyethylene tanks walks through supporting the loaded weight correctly.
