The Enduraplas 250 Gallon Black Horizontal Leg Tank (THF00250B) is a 250-gallon polyethylene haul tank built to ride low and travel full. Its integrally molded legs cradle the tank on a skid, trailer, or flatbed, and the black resin shields the contents from UV and light. With a 47-inch width and 55-inch length, the footprint is 47.0 x 55.0 inches and the tank stands just 34 inches tall, so it slides under low clearances and keeps the load's center of gravity down where it belongs for transport. This is the horizontal leg tank format ag operators search for when they need a 250 gallon black tank that hauls full.
Will it work for your load?
Start with weight, because that is what governs your trailer and your tie-downs. Filled with water this tank carries roughly 2,085 lb. Rated to a specific gravity of 1.9, it is built for contents heavier than water - the maximum rated contents weight is 3,962 lb. That 1.9 SG rating is the headline number for a horizontal leg tank like this: it is what lets you legitimately haul dense liquid fertilizers and concentrated chemistries that would over-stress a 1.5 SG water tank. Before you commit a load, run your gallons and product density through the Tank Sizing Calculator and review the Tank Sizing Guide so the filled weight matches what your trailer and axles can legally carry. Port and outlet sizes are not listed in our spec data for this tank - read them off the technical drawing on this page or confirm by phone at 866-418-1777 before you plumb it.
Chemical compatibility
This is a polyethylene tank rated to 1.9 specific gravity. The resin grade is not confirmed in our data - verify HDLPE versus XLPE with the manufacturer before any chemical service, because crosslinked and linear polyethylene differ in how they hold up to aggressive chemistries, and that distinction can decide whether a tank survives the product you put in it. Always verify against the OEM chemical-resistance chart at your exact concentration and operating temperature; the entries below are concentration-specific and assume the matched fitting and gasket materials.
Within this tank's compatibility set you can haul liquid fertilizer and ag chemistries such as Urea Solution (50%) with PP/PVC fittings and EPDM gaskets, DEF (32.5%) with 316SS fittings and EPDM gaskets, Aluminum Sulfate (50%), Ferric Chloride (50%), Ferric Sulfate (60%), Ferrous Sulfate (20%), Calcium Chloride (40%), Magnesium Chloride (30%), Sodium Carbonate (30%), Potassium Carbonate (50%), Potassium Hydroxide (saturated), Ethylene Glycol (100%), and Sodium Thiosulfate (40%) all on PVC with EPDM. Propylene Glycol and Zinc Orthophosphate take PP/316SS fittings with EPDM gaskets. Aggressive acids in the set require harder seals: Hydrochloric Acid (37%), Hydrofluoric Acid (48%), Phosphoric Acid (85%), Hydrogen Peroxide (50%), and Sodium Hypochlorite (<16.5%) all call for Viton gaskets, while Sulfuric Acid (98%) needs CPVC fittings with Viton, and Peracetic Acid (30%) takes 316SS fittings with an Aflas gasket. Others in the set include Acetic Acid (60%), Hydrofluosilicic Acid (26%), Polyaluminum Chloride, Sodium Bisulfate, Sodium Bisulfite, and Ozonated Water (up to 10 PPM, which depends heavily on PPM and contact time - respect that ceiling). Match every fitting and gasket to the chemical you are running, and start from the full chemical compatibility reference.
The mistake to avoid
The 1.9 SG rating describes the tank shell, not the seals and connections. The most common and most expensive error on a chemical haul tank is bolting on the wrong fitting or gasket: a tank that handles the product fine will still leak from a port if the gasket is, for example, EPDM where the chart calls for Viton on Sodium Hypochlorite or Sulfuric Acid. Watch the outliers - Peracetic Acid needs an Aflas gasket, which a shop stocking only EPDM and Viton will not have on hand, and several products (DEF, Peracetic Acid, Propylene Glycol, Zinc Orthophosphate) call for 316SS or PP rather than PVC. Spec your fittings and gaskets per the OEM chart for your exact concentration, and confirm the HDLPE versus XLPE resin question before you load anything corrosive.
This tank ships LTL freight from Neche, ND, quoted live to your ZIP - get your number in seconds with the Freight Cost Estimator or call 866-418-1777 to talk through your haul. For sizing and ag-trailer setup, see our guides on applicator and leg tanks for fertilizer, portable utility tanks and DOT classification, and fertilizer-blend tank stratification.
