The Enduraplas 1400 Gallon Black Horizontal Leg Tank is built for hauling, with a 70 x 102-inch footprint and a 66-inch height that keeps the load low and stable on a trailer. The black polyethylene shell carries a 1.9 specific gravity rating - the highest poly rating offered - which is what lets this horizontal leg tank handle dense fertilizer blends, brines, and aggressive chemicals rather than water alone. The integrated leg design and squat horizontal profile are what separate an Enduraplas horizontal leg tank from a standing vertical: weight sits low and forward, so it tows and corners predictably when full. Because 1.9 is the top of the scale, there is no heavier-duty step above this tank for denser liquids.
Will it work for your load?
Capacity is 1,400 gallons. Filled with plain water (specific gravity 1.0), contents weigh about 11,676 lb. Because the shell is rated to 1.9 specific gravity, the maximum rated contents weight climbs to roughly 22,184 lb on a denser liquid - that 1.9 figure is the ceiling, not a suggestion. Before you fill, multiply your liquid's specific gravity by the full-water weight to confirm you stay under the rated maximum: a 1.6 SG blend, for example, lands near 18,700 lb of contents. Use the Tank Sizing Calculator and the Tank Sizing Guide to match this black horizontal leg tank to your spreader or transport setup, and confirm your trailer and axles are rated for the loaded weight. One gap to close before ordering: the catalog data does not specify the fitting layout for this tank, so confirm outlet size, vent, bulkhead, and fill-opening configuration with us at 866-418-1777 so it arrives plumbed for your rig.
Chemical compatibility
This is a polyethylene tank with a 1.9 specific gravity rating. The resin reads as high-density linear (HDLPE), but the source data carries a question mark on that grade - confirm HDLPE versus crosslinked (XLPE) with us before committing it to chemical service, because that distinction changes resistance to several oxidizers (bleach, peroxide, peracetic acid). Treat that confirmation as the gate on the list below. Compatibility, fittings, and gaskets are concentration- and temperature-specific, so always check against the OEM chemical-resistance chart for your exact concentration and operating temperature.
Within this tank's 1.9 SG rating, the following are compatible at the listed concentrations with the indicated fitting and gasket materials: Acetic Acid (60%, PP/PVC, EPDM), Aluminum Sulfate (50%, PVC, EPDM), Calcium Chloride (40%, PVC, EPDM), DEF (32.5%, 316SS, EPDM), Ethylene Glycol (100%, PVC, EPDM), Ferric Chloride (50%, PVC, EPDM), Ferric Sulfate (60%, PVC, EPDM), Ferrous Sulfate (20%, PVC, EPDM), Hydrochloric Acid (37%, PVC, Viton), Hydrofluoric Acid (48%, PP/PVC, Viton), Hydrofluosilicic Acid (26%, PP/PVC, Viton), Hydrogen Peroxide (50%, PVC, Viton), Magnesium Chloride (30%, PVC, EPDM), Peracetic Acid (30%, 316SS, Aflas), Phosphoric Acid (85%, PVC, Viton), Polyaluminum Chloride (PVC, EPDM), Potassium Carbonate (50%, PVC, EPDM), Potassium Hydroxide (saturated, PVC, EPDM), Propylene Glycol (PP/316SS, EPDM), Sodium Bisulfate (PVC/PP, EPDM), Sodium Bisulfite (PVC/PP, EPDM), Sodium Carbonate (30%, PVC, EPDM), Sodium Hypochlorite (under 16.5%, PVC, Viton), Sodium Thiosulfate (40%, PVC, EPDM), Sulfuric Acid (98%, CPVC, Viton), Urea Solution (50%, PP/PVC, EPDM), Zinc Orthophosphate (PP/316SS, EPDM), and Ozonated Water (up to 10 PPM, PVC, EPDM). The quick rule for buying the right parts: use Viton gaskets for the strong acids and oxidizers (hydrochloric, sulfuric, phosphoric, hydrofluoric, hydrofluosilicic, hydrogen peroxide, and bleach); 316SS fittings with EPDM for DEF; 316SS with Aflas for peracetic acid; CPVC - not plain PVC - for 98% sulfuric; and PVC with EPDM for nearly everything else. Matching the wrong fitting or gasket to the chemical is the most common and most avoidable mistake on a tank like this. For the full picture across concentrations, see our chemical compatibility reference.
The mistake to avoid
The single error that bites buyers on a 1.9 SG haul tank is treating the rating as a license to fill all 1,400 gallons with any liquid. The 1.9 ceiling governs density, not volume - a denser blend means you hit your weight limit, and your trailer's, before the tank is full. Run the math against the 22,184 lb maximum rated contents weight, confirm fitting and gasket materials against the OEM chart, and resolve the HDLPE-versus-XLPE resin question before any chemical service. See the technical drawing on this page for fitting locations and overall dimensions, and review our guide on fertilizer-blend tank stratification if you are mixing on the move.
This tank ships LTL freight from the plant in Neche, ND, with freight quoted live to your ZIP. Note that the tank ships empty - the ~22,184 lb figure is operating weight, not shipping weight - so get your number on the empty tank instantly with the Freight Cost Estimator or call 866-418-1777, and confirm your trailer's GVWR for the loaded operating weight. For trailer-mount fertilizer and applicator setups, our guides on applicator and leg tanks for fertilizer and portable utility tanks and DOT classification cover the road-use rules worth knowing before you haul.
