The Bushman 400 Gallon Doorway Liquid Storage Tank solves one specific problem: getting bulk water storage through a standard doorway and into a basement, mechanical room, or interior space where a conventional round vertical tank will not fit. At 29 inches wide and 66 inches long with a 70-inch height, this narrow-profile polyethylene tank is designed to move through 30-inch-and-wider doorways while still holding a full 400 gallons.
Will it work for your space and your water?
The 29-inch nominal width is what makes this an interior doorway tank, but treat that number carefully: a nominal 30-inch door often gives only about 28 to 29 inches of actual clear opening once the leaf and stops are accounted for. Measure your true clear opening with the door leaf removed before you order. The footprint is 29.0 x 66.0 inches (about 13.3 square feet), so plan your pad and clearance around that slim rectangular base rather than the wide diameter of a standard vertical tank. Filled to its full 400 gallons, the tank and water weigh approximately 3,336 pounds, which works out to roughly 250 pounds per square foot distributed across that narrow footprint. That psf figure is the number your slab or floor actually has to carry. Confirm structural support with our Tank Sizing Guide, size your draw and refill needs with the Tank Sizing Calculator, and for a poured base read our field notes on concrete pad sizing for above-ground polyethylene tanks.
Stability, common uses, and the mistake to avoid
Standing 70 inches tall on a 29-inch base, this tank carries a height-to-width ratio of roughly 2.4 to 1, so plan to wall-strap or anchor the tall, narrow profile once it is set. Buyers reach for a doorway tank for interior water storage, emergency and fire-reserve water, and rainwater or reuse collection where floor space and access are tight. If you are building a private fire-protection reserve, start with the sizing discipline in our guide on fire-water reservoir tank design. For grey-water, rainwater, and condensate aggregation, see our breakdown of industrial water reuse tank topology.
The mistake to avoid: this is a water and liquid storage tank. It is not rated here for chemical service, and no specific-gravity rating above water is documented for this unit. If you plan to store anything heavier than water or chemically aggressive, do not assume this tank covers it. And because premature failures on polyethylene tanks tend to originate at the vapor-saturated headspace rather than the liquid side, our piece on HDPE wall thickness at the headspace explains what to inspect and why. Confirm fitting locations against Bushman's spec sheet before you finalize plumbing.
Freight
This tank ships LTL freight from the nearest plant, quoted live to your ZIP code. Get a real number in seconds with the Freight Cost Estimator, or call our team at 866-418-1777 for help matching the doorway tank to your access constraints and water storage plan.
