The Enduraplas 1600 Gallon Black Horizontal Leg Tank is a polyethylene horizontal leg tank built for hauling and applying liquids on and off the field. At 1600 gallons in a 130-inch long by 71-inch wide footprint and 59 inches tall, it carries serious volume in a self-supporting horizontal body, with molded legs that let it sit stable on a skid, trailer, or flatbed. The black UV-stabilized resin holds up to outdoor storage and field service, and the 1.9 specific gravity rating gives you real headroom for dense liquids - this is an enduraplas horizontal tank built for weight, not just water.
Will it work for your load?
Full of water this tank weighs about 13,344 lb, but it is engineered to carry up to roughly 25,354 lb of contents at its 1.9 specific gravity rating. Water uses only about 53% of that rated ceiling, so the 1.9 SG is genuine headroom for fertilizer blends and other dense liquids, not a marketing number. Match that loaded figure against your trailer or applicator capacity before you order - a tank this size needs proper support across the full 71.0 x 130.0 footprint, with the legs bearing on a continuous deck rather than spanning open framing. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm the size and weight fit your rig, and see the technical drawing on this page for the fitting and leg layout.
Chemical compatibility
This is a polyethylene tank carrying a 1.9 specific gravity rating - confirm the exact resin construction (linear versus crosslinked polyethylene) with the manufacturer before committing it to chemical service, since the two differ in chemical resistance. The 1.9 SG rating keeps dense chemicals within the shell's design weight, but the wetted fittings and gaskets are what decide whether a given chemical is safe. Always verify your chemical against the OEM chemical-resistance chart at your actual concentration and temperature, since both change what the tank and its hardware can handle. One common haul use is DEF at 32.5% - this tank handles it, but spec 316SS bulkhead fittings and EPDM gaskets, never carbon steel or brass, since the wrong wetted metals contaminate DEF in the field.
Chemicals this tank can hold at the concentrations shown, with the fitting and gasket materials to specify: Acetic Acid 60% (PP/PVC fittings, EPDM gaskets), 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 <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 fittings, EPDM gaskets). For the full chart and concentration notes, see our chemical compatibility resource.
The mistake to avoid
The expensive error on a 1600-gallon leg tank is treating the 1.9 SG rating as a license to skip the fitting math. The shell carries dense liquid fine, but your bulkhead fittings, gaskets, and valves are the failure point - DEF and peracetic acid need 316SS, sulfuric acid needs CPVC, and the aggressive acids need Viton or Aflas gaskets rather than the EPDM that handles the salts and glycols. Spec the wetted materials to the chemical, not the tank. Carrying fertilizer blends? Read our guide on fertilizer-blend tank stratification and our overviews of applicator and leg tanks for fertilizer and portable utility tanks and DOT classification before you load and tow.
This is a haul-class tank, and loaded it can reach 25,354 lb, so freight and rig capacity both matter. It ships LTL freight from the single Enduraplas plant in Neche, ND, on the northern tier, which drives longer-haul rates - quote your ZIP before ordering. Get your number now with the Freight Cost Estimator, or call 866-418-1777 to confirm fitting layout, weight, and delivery before you order.
