The Chem-Tainer 7 Gallon Rectangular Open Top Tank is a compact open-top vessel for batching, rinse stations, and small-volume water handling where you need easy top access rather than a sealed lid. It holds 7 gallons and is molded from polyethylene in a rectangular open-top form, so it seats flat against a wall or bench and nests into tight footprints that a round tank wastes. When you are searching for a rectangular open top tank or a plain open tank for a workbench or wash line, this is the small-format size that fits the space.
Will it work for your job?
Filled to the brim with water this open top tank carries about 58 lb, so a single shelf, cart, or bench bracket rated for that load handles it without special support. That 58 lb figure is water at specific gravity 1.0; a denser solution weighs more at the same fill line, so re-check your stand or shelf rating before you put anything heavier than water in it. Because the top is fully open, this rectangular tank is built for hand-filling, dipping, scooping, and quick visual level checks, not for pressurized or sealed storage. Keep the working level below the rim to leave freeboard for movement and hand tools. If you are still deciding on volume, size it against your actual daily draw with the Tank Sizing Calculator and the Tank Sizing Guide before you commit.
The mistake to avoid
The common error with a rectangular open top tank this size is treating it as a covered or transport container. It has no gasketed lid and no bung, so it should stay stationary and upright in service; sliding a partially filled unit lets the free water surface slosh and spill. Confirm your bench or stand is level and that the load rating clears the 58 lb full-water weight, and keep it out of traffic paths where it could be bumped.
Freight is quoted separately from the list price. Get a live delivery cost to your ZIP with the Freight Cost Estimator, or call 866-418-1777 and we will quote it for you and confirm the current lead time. For larger water-storage builds, our guides on industrial water reuse tank topology and concrete pad sizing for above-ground polyethylene tanks walk through the engineering once you scale past bench volumes.
