The Enduraplas 1200 Gallon White Horizontal Sump Bottom Leg Tank arrives molded from polyethylene at a 1.9 specific gravity rating, the spec that tells you this tank is built for heavy liquids and demanding agricultural and chemical-transport work, not just water. It measures 102 inches long, 70 inches wide, and 64 inches high, sitting on an integrated leg-and-frame stand with a sump bottom that drains toward the outlet so you can pull product down to the last usable inch. The horizontal leg-tank format keeps the center of gravity low and the footprint stable at 70 by 102 inches, which is why this Enduraplas horizontal leg tank is a workhorse for skid-mounted and transport setups.
Will it hold what you need to move?
Capacity is a true 1200 gallons. Filled with water, the contents alone weigh about 10,008 pounds, and the tank is rated to carry up to 19,015 pounds of contents at its 1.9 specific gravity ceiling. That headroom is the whole point of a 1.9-rated wall: it lets you run dense fertilizer blends, brines, and heavy chemistries without exceeding the structural rating, where a standard 1.5-SG tank would already be maxed out. Match your actual product density against that 19,015-pound ceiling before you fill, and use the Tank Sizing Calculator and Tank Sizing Guide to confirm gallons and weight for your liquid. One note: the 19,015-pound figure is a structural content ceiling, not a road or axle rating. If you are mounting this on a trailer or moving it on public roads, the DOT classification is a separate question, and our guides on applicator and leg tanks for fertilizer and portable utility tank DOT classification walk through that scope. Refer to the technical drawing on this page for exact port and sump locations; fittings are not pre-listed for this tank, so the materials called out below are recommended materials to source, not hardware that ships installed.
Chemical compatibility
This is a polyethylene tank rated to 1.9 specific gravity. The resin is recorded as "HDLPE" but listed with a question mark, so confirm the exact polyethylene resin of your tank before committing it to chemical service, since different polyethylene resins resist different chemistries. Every fitting and gasket pairing below comes from our chemical-compatibility data and is specific to the concentration noted, so verify your exact service conditions against that data.
Chemicals this tank can handle at the listed concentrations, with the recommended fitting and gasket materials, include: 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, EPDM). Note how the fitting material shifts with the chemistry: DEF and peracetic acid call for 316 stainless, while sulfuric acid moves up to CPVC and several acids require Viton instead of EPDM gaskets. See the full chemical compatibility reference, which is concentration-specific, before you spec your plumbing.
The mistake to avoid
The most common error on a 1.9-rated tank is matching the wrong gasket to the chemistry. The data above shows it plainly: EPDM works for most salts and glycols, but the strong oxidizers and concentrated acids on this list need Viton or Aflas, and DEF needs 316 stainless fittings rather than PVC. That spec matters most at the bulk outlet on a sump-bottom tank, because the sump is the low point where dense or aggressive product settles and sits, so the outlet fitting and gasket carry the same material spec as the rest of the plumbing and see the most chemical load. The second mistake is skipping resin confirmation. Because the resin here is recorded as "HDLPE" with a question mark, confirm the exact polyethylene resin with us before you put anything aggressive in it, since that single answer changes which chemicals on this chart are truly safe for the long haul.
This tank ships LTL freight from a single Enduraplas plant in Neche, ND, quoted live to your ZIP code. Because there is one northern origin, the lane to your address is the real cost driver, so get a concrete number with the Freight Cost Estimator, or call us at 866-418-1777 and we will quote it for you.
