The Enduraplas 1200 Gallon White Horizontal Sump Bottom Leg Tank (SKU THD01200W) is built for haul-and-transport duty where you need a high-volume tank that empties cleanly and rides low on a trailer or skid. The horizontal leg-tank body sits on integrated support legs with a sump-bottom design, so contents drain toward a low point instead of pooling across a flat floor. Molded from polyethylene in natural white with a 1.9 specific-gravity rating, this 1,200-gallon Enduraplas horizontal leg tank is engineered to carry dense liquids that would overstress a standard 1.0 or 1.5 SG water tank.
Will it work for your job?
The tank measures 102 inches long by 70 inches wide by 63 inches tall, giving a 70.0 x 102.0 inch footprint that fits a typical flatbed or applicator skid. Filled with water it holds roughly 10,008 pounds, and at its full 1.9 SG rating it is built to carry up to 19,015 pounds of contents - the number that matters when you are hauling fertilizer blends, brine, or other heavy liquids rather than plain water. That 1.9 rating is the top of the scale for this body, so if your liquid is denser than water you are already at the heaviest-duty version of this tank, not one rung below it. The natural white translucency lets you eyeball the liquid level through the wall. For help matching capacity to your volume and weight needs, run the Tank Sizing Calculator or read the Tank Sizing Guide, and see the technical drawing on this page for fitting and dimension callouts. Confirm the loaded weight of your specific liquid against your trailer and axle rating before you fill.
Chemical compatibility
This is a polyethylene tank with a 1.9 specific-gravity rating. The resin is recorded as HDLPE, so confirm whether your tank is HDLPE versus XLPE with us before putting it into chemical service - the distinction matters for long-term resistance. Compatibility is concentration- and temperature-specific, so always check the OEM chemical-resistance chart for your exact concentration and service temperature before committing. Fittings and gaskets are not included with the tank; they are selected per chemical and confirmed at order, so the material callouts below tell you what to specify.
Most chemicals here use the default PVC fitting / EPDM gasket pairing: aluminum sulfate (50%), calcium chloride (40%), ethylene glycol (100%), ferric chloride (50%), ferric sulfate (60%), ferrous sulfate (20%), magnesium chloride (30%), potassium carbonate (50%), potassium hydroxide (saturated), sodium carbonate (30%), sodium thiosulfate (40%), and ozonated water (up to 10 PPM, no dedicated page yet - call for guidance). A handful pair EPDM with a PP or stainless option: acetic acid (60%) (PP/PVC), urea solution (50%) (PP/PVC), polyaluminum chloride (PVC), sodium bisulfate (PVC/PP), sodium bisulfite (PVC/PP), propylene glycol (PP/316SS), and zinc orthophosphate (PP/316SS).
These break the default and need upgraded hardware - get them wrong and the fitting fails before the tank does: sulfuric acid (98%) needs CPVC fittings with Viton gaskets; DEF (32.5%) and peracetic acid (30%) need 316 stainless (peracetic acid pairs it with Aflas, not EPDM); and the Viton-gasket acids - hydrochloric acid (37%), hydrofluoric acid (48%), hydrofluosilicic acid (26%), hydrogen peroxide (50%), phosphoric acid (85%), and sodium hypochlorite (under 16.5%) - require Viton rather than EPDM. Browse the full chemical compatibility reference for any chemical not listed here.
Avoid the most common mistake
The error people make on a horizontal leg tank like this is matching the fitting and gasket to the tank instead of to the chemical. The polyethylene shell may handle a liquid while the wrong valve or gasket fails first - that is exactly the trap behind the Viton-required acids and the stainless-required DEF and peracetic acid above. The second mistake is loading a heavy blend without checking trailer weight: at 1.9 SG this tank carries up to 19,015 pounds, nearly double the 10,008-pound water figure, so verify your axle and hitch ratings before you transport. If you are hauling fertilizer blends, the guides on applicator and leg tanks for fertilizer, portable utility tanks and DOT classification, and fertilizer-blend tank stratification are worth reading before your first load.
This tank ships LTL freight from the Enduraplas plant in Neche, North Dakota, with the cost quoted live to your ZIP code. Get an instant rate with our Freight Cost Estimator, or call 866-418-1777 to confirm fittings, gaskets, lead time, and the right setup for your application before you order.
