Norwesco 35 Gallon Plastic Portable Flat Bottom Utility Tank in White Without Fitting

The Norwesco 35 Gallon Portable Flat Bottom Utility Tank (SKU N-44874) is a compact, upright polyethylene tank built for water hauling and utility service where you need capacity in a small footprint. At 15 inches square and 43 inches tall, it stands on a flat bottom for placement on a truck bed, trailer, or pad, and it ships from Norwesco with a 5-inch lid and no fitting installed so you can spec the outlet your job actually calls for. Empty weight is just 20 pounds, so one or two people can position the shell before filling.

Will it work for your job?

This is a 35-gallon white portable utility tank molded from FDA-approved (food-contact) polyethylene resin, rated to a 1.5 specific gravity and a maximum contents temperature of 120 F (48 C). The FDA rating speaks to food-contact resin suitability; it is not an NSF/61 drinking-water listing. The 1.5 SG rating means the wall is built to carry contents up to 1.5 times the weight of water, which covers water and most standard water-based utility liquids. Sizing math matters here: filled with water, the tank plus contents runs about 292 pounds, and at its full 1.5 SG rating the contents alone can reach roughly 438 pounds. The tall, narrow 15 x 15 x 43 profile is compact but top-heavy when full, so strap it and set it on a level pad rated for the 292-pound (water) to 438-pound (max 1.5 SG) loaded weight rather than the empty 20-pound shell. If you are comparing capacities or working out how much tank your route needs, run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide before you buy.

A common mistake to avoid

This tank ships without a fitting, and the only factory opening is the 5-inch lid. Any outlet or bulkhead and its gasket must be added by you, so size the gasket to the bulkhead you choose, not to the tank. The bigger number people overlook is the 1.5 SG ceiling, and it pairs with the temperature limit: your contents must stay at or under 1.5 specific gravity AND at or under 120 F (48 C) at the same time. A hot, dense liquid fails on both axes. For anything heavier than 1.5 SG, this shell is not rated, and you should request a heavier-wall tank. For farm and fleet water hauling, it also helps to understand how these portable utility tanks are classified for transport, covered in our guide on Norwesco loaf-style portable utility tanks and the 49 CFR 173.5 agricultural exemption. See the technical drawing on this page for the lid and port layout before you order fittings separately.

This 35-gallon Norwesco portable flat-bottom tank ships LTL freight from the Norwesco plant in Sheldon, IA, quoted live to your ZIP. Get an exact number in seconds with our Freight Cost Estimator, or call 866-418-1777 and we will size the tank and the freight for you.