The Norwesco 35 Gallon Black Horizontal Leg Tank (SKU 41710) is a compact, saddle-style poly tank built for mobile fertilizer and liquid-handling work where a low, stable profile matters more than capacity. It holds 35 gallons in a black polyethylene body that measures 29 inches long by 20 inches wide and 23 inches high, with integrated legs that let it sit flat on a skid, trailer, or truck bed. The black resin blocks light to slow algae growth, and the horizontal leg-tank geometry keeps the center of gravity low when you are hauling liquid down a field road. This is the tank applicators reach for when they need a 35 gallon black horizontal leg tank that mounts and moves without a custom cradle.
Will it work for your job?
Start with weight, because that is what stops most installs. Filled with water (specific gravity 1.0), this tank carries about 292 lb of contents; at its full 1.5 specific-gravity rating it is rated to hold up to 438 lb of liquid. That is a 146 lb swing between water and a heavy 1.5-SG product, so size your straps, skid, and trailer tongue weight to the heaviest liquid you will actually run, not to water. The footprint is 20.0 x 29.0 inches, so confirm your deck or saddle frame supports that span. The tank is molded with a fill/lid opening; the technical drawing on this page notes a revised lid thread, so check that drawing for the exact thread and port layout before you order fittings, and call 866-418-1777 if you need help matching a bung or vent. Not sure 35 gallons fits your application rate and refill interval? Run the numbers with our Tank Sizing Calculator and review the Tank Sizing Guide.
Chemical compatibility
This is a polyethylene tank with a 1.5 specific-gravity rating. The resin is recorded as HDLPE in our data but is not yet fully confirmed, so confirm HDLPE versus XLPE before putting this tank into chemical service - crosslinked and linear polyethylene differ in chemical resistance. Treat every chemical use as conditional: verify resin, concentration, and operating temperature against the OEM chemical-resistance chart before service. At the 1.5 SG rating, this tank suits these solutions when fitted and gasketed correctly: Acetic Acid at 60% (PP/PVC fittings, EPDM gaskets), Aluminum Sulfate at 50% (PVC, EPDM), Calcium Chloride at 40% (PVC, EPDM), DEF at 32.5% (316SS fittings, EPDM), Ferrous Sulfate at 20% (PVC, EPDM), Magnesium Chloride at 30% (PVC, EPDM), Sodium Carbonate at 30% (PVC, EPDM), Urea Solution at 50% (PP/PVC, EPDM), and Ozonated Water up to 10 PPM (PVC, EPDM). Running DEF? Use 316 stainless fittings and EPDM gaskets only - PVC and dissimilar metals can contaminate diesel exhaust fluid. See our full chemical compatibility reference for the concentration- and temperature-specific details.
Chemicals that need a higher-SG tank
Several common process chemicals exceed what a 1.5 SG tank should hold and require a 1.9 specific-gravity tank instead - do not run them in this one. For any of these, step up to a 1.9-SG tank and call 866-418-1777 to match one in this size class. The list includes Ethylene Glycol, Ferric Chloride, Ferric Sulfate, Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Peracetic Acid, Phosphoric Acid, Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Hypochlorite, Sodium Thiosulfate, Sulfuric Acid, and Zinc Orthophosphate. Sodium hypochlorite, sulfuric acid, and the peroxides in particular also demand Viton or Aflas gaskets rather than EPDM - matching the tank's SG and the gasket material to the chemical is the most common mistake on a tank this size.
Norwesco molds this tank at plants in 10 states, so your order ships LTL from the origin nearest your ZIP - Fairfield, TX; Griffin, GA; Hanford, CA; Owego, NY; Shawnee, OK; Sheldon, IA; St. Bonifacius, MN; Tooele, UT; Washington Court House, OH; or Washougal, WA - which means a shorter LTL lane and lower freight for you. Freight is quoted live to your ZIP: get your exact number with the Freight Cost Estimator, or call 866-418-1777. For application and DOT context on hauling fertilizer in leg and applicator tanks, read our guides on Norwesco applicator and leg tanks for fertilizer, loaf-style portable utility tanks and the 49 CFR 173.5 farm exemption, and fertilizer-blend tank stratification.
