The Norwesco 500 Gallon Doorway Water Tank is a narrow-profile polyethylene tank built to fit through openings a standard round vertical tank could never clear. At roughly 31 inches wide by 68 inches tall, it rolls into basements, mechanical rooms, mobile homes, and other confined spaces while still holding a true 500 gallons for non-potable water storage, rainwater capture, fire-water reserve, and hauling.
Will it work for your space and your floor?
The defining number on this Norwesco doorway tank is its 31-inch width. Measure your narrowest doorway, hallway, and stairwell turn before you order. Once it is in place, a full 500 gallons of water weighs about 4,170 pounds. Because that weight sits on the narrow 31-inch footprint of a doorway tank rather than the wide base of a squat round tank, the load is concentrated over a small area, so the pad or floor underneath has to be sized for it. Concrete on grade handles it easily; an elevated wood floor or raised platform should be checked against the full 4,170-pound filled weight, concentrated over the tank's narrow base, before you set it. Run your storage needs through the Tank Sizing Calculator and the Tank Sizing Guide if you are deciding between this 500-gallon doorway tank and another capacity.
Fittings and configuration
For fitting placement, outlet sizing, and exact tapping locations on this specific 500 gallon doorway tank, see the technical drawing on this page. The tank ships with fittings as configured by Norwesco, so confirm the as-shipped outlet and bulkhead positions match your plumbing plan before you set the tank in a finished space. A doorway tank is far harder to reposition once it is through the frame and connected, so it pays to verify the layout up front.
Common use cases
This narrow Norwesco water tank is a frequent pick for two jobs the round tanks cannot do: indoor backup and confined-site storage. For rural and remote fire-protection reserve sizing, the fire-water reservoir tank design guide covers NFPA 22 sizing and freeze protection. If you are aggregating grey-water, rainwater, or HVAC condensate, the industrial water reuse topology guide walks through quality-banded storage trains. For full dimensions and detail on this size, the 500 gallon doorway water tank buyer's guide goes deeper.
This tank ships LTL freight from Burnet, TX, quoted live to your ZIP code. Because the filled weight is about 4,170 pounds and the profile stands roughly 68 inches tall, it moves as LTL freight rather than parcel, so pull a rate to your ZIP before you buy. Get a freight number in seconds with the Freight Cost Estimator, or call 866-418-1777 to talk through placement, doorway clearance, and delivery. We will help you confirm this 500 gallon doorway tank is the right fit before it ships.
3 Year Warranty
