The Enduraplas 250 Gallon Yellow Horizontal Sump Bottom Leg Tank is a 250-gallon polyethylene horizontal leg tank built for haul-and-transport duty, rated to a 1.9 specific gravity so it can carry dense liquids that would overload a standard 1.5-SG tank. The molded-in legs and supplied frame let it sit stable on a skid, trailer, or pickup bed. It measures 38" high by 47" wide by 55" long with a 47.0 x 55.0 inch footprint, so it slots into tight trailer decks while still holding a full 250 gallons. To size it against your real load, the Tank Sizing Calculator and Tank Sizing Guide walk you through capacity versus weight before you commit.
Will it handle your load?
Weight is the number that matters on a transport tank, not just gallons. Filled with plain water this tank carries roughly 2,085 lbs; at its full 1.9-SG rating it is engineered to carry up to about 3,962 lbs of contents. At 250 gallons, that 3,962 lb ceiling works out to a fluid density of about 1.9 SG, so any contents at or below 1.9 SG fill the tank without exceeding its structural rating. That headroom is the whole reason for the 1.9 build — heavy fertilizer blends, brines, and concentrated chemicals that would push a lighter tank past its design limit still sit inside this one's envelope. Confirm your trailer, hitch, and axle ratings cover the loaded weight, and account for liquid surge when partially full. If you are blending and hauling fertilizer, the guide on fertilizer-blend tank stratification covers the mixing and field-verification steps that keep a load on-spec, and our overview of applicator and leg tanks for fertilizer explains where horizontal leg tanks fit in a farm fleet.
Chemical compatibility
This tank is molded from polyethylene and carried at a 1.9 specific gravity rating. Per the Enduraplas chemical-resistance chart, which is concentration- and temperature-specific, the following are listed as compatible at the noted strengths with the noted fitting and gasket materials. Three are worth pulling forward: DEF (32.5%, 316SS fittings, EPDM gaskets) suits this tank for diesel-exhaust-fluid hauling; sulfuric acid (98%) is the one entry that calls for CPVC fittings rather than PVC, with Viton gaskets; and sodium hypochlorite (under 16.5%, PVC) needs Viton, not EPDM, because it is an oxidizer. The full listed set: acetic acid (60%, PP/PVC, EPDM), aluminum sulfate (50%, PVC, EPDM), calcium chloride (40%, PVC, 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 thiosulfate (40%, PVC, EPDM), urea solution (50%, PP/PVC, EPDM), zinc orthophosphate (PP/316SS, EPDM), and ozonated water (up to 10 PPM, PVC, EPDM). Match the fitting and gasket material to your specific chemical, and always verify against the OEM chart for your exact concentration and temperature. See our full chemical compatibility reference for the details.
The mistake to avoid
The trap on a haul tank is buying for gallons and forgetting density. A 1.5-SG tank looks cheaper, but if you are moving a heavy brine, glycol, or concentrated acid, you will be over its rating the moment it is full — this 1.9-SG build exists precisely so you do not have to play that game. Spec the right gasket for your chemical, and confirm your towing and axle ratings against the loaded weight. Fitting and outlet configuration is not listed in our data for this tank, so confirm the locations and sizes against the technical drawing on this page or by phone before you plumb it.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP. Get a real number in seconds with our Freight Cost Estimator, or call 866-418-1777 and we will quote it and answer any compatibility question for your exact chemical and concentration.
