The Enduraplas 3200 Gallon Yellow Horizontal Sump Bottom Leg Tank (SKU THD03200Y) is a 3,200-gallon polyethylene horizontal leg tank built for transport and field work where the load has to ride low and unload clean. It measures 145 inches long by 97 inches wide by 83 inches high, with a 1.9 specific gravity rating - the high SG that lets it haul dense liquids that would over-stress a lighter tank. The molded leg supports cradle the tank flat to a trailer or skid deck, and the sump bottom drains contents toward the outlet so you empty the tank instead of leaving a heel behind on every load. If you are sizing a hauling rig, this is the kind of horizontal leg tank that pairs with a non-roadable trailer build for moving water, fertilizer blends, or chemical loads between sites.
Will it work for my job
Start with weight, because at this size weight decides the trailer and the running gear. Filled with water (SG 1.0), this tank carries roughly 26,688 lb of contents alone. At its full 1.9 SG rating, the maximum rated contents weight is about 50,707 lb - and that is the liquid only, before the tank, trailer, and hardware. Add it all up against your axle and hitch ratings before you load. The 97-inch by 145-inch footprint is the bearing area your support deck needs to carry, and on a horizontal leg tank the molded legs set the bearing points - your deck must support continuously under those legs, not bridge the tank on a few cross members. Use the Tank Sizing Calculator to confirm partial-fill weights for your liquid, and the Tank Sizing Guide if you are choosing between horizontal leg tank capacities.
Chemical compatibility
This tank is molded polyethylene rated to 1.9 specific gravity. Verify the exact resin with us at 866-418-1777 before committing it to any chemical service, because polyethylene resins behave differently against aggressive media. Compatibility ratings below come from the OEM chemical-resistance chart and are specific to the listed concentration and to ambient temperature; hotter service narrows the list. One detail worth planning around: most listed chemicals run EPDM gaskets, but the oxidizers and strong acids - Hydrochloric, Hydrofluoric, Hydrogen Peroxide, Phosphoric, Sodium Hypochlorite, and Sulfuric - require Viton, and Peracetic Acid requires Aflas. Match the seal to the chemical, not just the tank.
Per the chart, this tank's SG rating supports service with Acetic Acid (60%) on PP/PVC fittings with EPDM gaskets, Aluminum Sulfate (50%), Calcium Chloride (40%), DEF (32.5%) on 316SS fittings, Ethylene Glycol (100%), Ferric Chloride (50%), Ferric Sulfate (60%), Ferrous Sulfate (20%), Hydrochloric Acid (37%) with Viton, Hydrofluoric Acid (48%) with Viton, Hydrofluosilicic Acid (26%), Hydrogen Peroxide (50%) with Viton, Magnesium Chloride (30%), Peracetic Acid (30%) on 316SS with Aflas, Phosphoric Acid (85%) with Viton, Polyaluminum Chloride, Potassium Carbonate (50%), Potassium Hydroxide (saturated), Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Carbonate (30%), Sodium Hypochlorite (<16.5%) with Viton, Sodium Thiosulfate (40%), Sulfuric Acid (98%) on CPVC with Viton, Urea Solution (50%) on PP/PVC, Zinc Orthophosphate, and Ozonated Water (up to 10 PPM) on PVC with EPDM. If you are running this as a DEF or urea haul tank - both common loads for a yellow ag-spec horizontal - keep the fittings on 316SS for DEF and PP/PVC for urea, and keep the system clean, since DEF is contamination-sensitive. Match the fitting and gasket material listed for your specific chemical, and review the full chemical compatibility reference before ordering. If your liquid is not on this list, call us before you buy.
The mistake to avoid
The single biggest error on a tank this size is loading to the SG rating without checking what the rest of your rig can carry. The 1.9 SG number describes what the tank shell tolerates - it does not mean your trailer, axles, or DOT road rating can legally and safely move 50,707 lb of contents. Confirm your equipment ratings first, and if you are hauling fertilizer blends watch for stratification on long runs; our guide on fertilizer-blend tank stratification and the applicator and leg tank fertilizer scope walk through the field checks.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP, and the sump-bottom outlet means you can drain it down before the return haul. Get an exact rate with our Freight Cost Estimator, or call 866-418-1777 to confirm fitment, resin, and freight before you order.
