The Norwesco 300 Gallon Portable Loaf Utility Tank (SKU N-43613) is a white polyethylene loaf tank built low and wide for stable transport and tight clearances. At 30 inches tall, 42 inches wide, and 63 inches long, it carries 300 gallons over a 42.0 x 63.0 inch footprint, giving it a low center of gravity that keeps liquid from sloshing high in a moving fleet truck or trailer. The molded polyethylene shell is rated to a specific gravity of 1.5, which is the top of the standard polyethylene range, so this is already the heavy-liquid-capable version of this shape: it handles water and denser-than-water utility liquids within that rating without stepping up to a different tank. If you searched for a Norwesco utility tank, a 300 gallon loaf tank, or simply a 300 gallon tank to skid- or flatbed-mount, this is the workhorse low-profile shape for those jobs.
Will it work for your job?
Full of water, this tank weighs about 2,502 lbs, and at its maximum rated 1.5 specific gravity the contents can reach roughly 3,753 lbs. Size your skid, trailer, or pad to that loaded number, not the empty shell weight, and confirm your vehicle's payload rating before filling. Spread across the 42 x 63 inch footprint, a full 1.5-SG load works out to roughly 1.4 psi average bearing pressure, which is the number to design your deck or pad against. Fill and access are through a single 8 inch threaded top opening (see the technical drawing on this page for thread placement); the drawing data shows no molded side or bottom outlets, so if you need gravity drain or pump-out you will want to plan a bulkhead or aftermarket fitting into your build. That 8 inch thread accepts a standard 8 inch vented or solid lid and a gasketed bung adapter, giving you a wide opening for fast top-loading and easy cleaning. If you are matching capacity to a haul schedule or coverage area, the Tank Sizing Calculator and Tank Sizing Guide help you work backward from gallons per trip to the right tank.
How it ships
This tank ships LTL freight, quoted live to your ZIP. Norwesco molds it at multiple plants, and we ship from the nearest stocking plant among Albertville, AL; Hanford, CA; Lancaster, OH; and Sheldon, IA. Because freight on a tank this size is a real line item, get your number before you commit using the Freight Cost Estimator, or call 866-418-1777 and we will quote it for you.
The mistake to avoid
The most common error with portable utility tanks is treating the 1.5 specific gravity rating as headroom you never have to think about. It is not headroom for mounting. A loaf tank rides in motion, and a partially filled tank with liquid surging fore and aft puts dynamic loads on your straps and frame that a static weight calculation misses. Secure it for the loaded 3,753 lb worst case and bias toward filling it full rather than half. If you are running these on farm fleet trucks, our guide on Norwesco loaf-style portable utility tanks and the agricultural exemption walks through DOT classification for farm use. For a stationary install on a pad, review concrete pad sizing for above-ground polyethylene tanks first.
Ready to spec it out? Pull your freight number with the Freight Cost Estimator or call 866-418-1777 to confirm the nearest shipping plant and lead time. If you are still weighing fire-water reservoir capacity or a larger water-reuse setup, our guides on fire-water reservoir tank design and industrial water-reuse tank topology can help you size the next step.
