The Enduraplas 1400 Gallon White Horizontal Sump Bottom Leg Tank is a 1,400-gallon polyethylene horizontal leg tank molded by Enduraplas in Natural White. It measures 102 inches long by 70 inches wide by 70 inches tall, with a 70.0 x 102.0-inch footprint, and rides on integrated legs that cradle the body on a trailer deck or skid. The sump bottom pitches contents toward the low point so you drain and rinse closer to empty - the reason this horizontal leg tank shows up in farm transport, fertilizer hauling, and mobile chemical service. It carries a 1.9 specific gravity rating, which is the number that decides whether this tank is right for what you plan to put in it.
Will it work for your application
Filled with water (1.0 specific gravity), this tank holds roughly 11,676 pounds of liquid - about 5.8 tons full. The 1.9 SG rating means the wall is built to hold liquids up to 1.9 times the density of water, supporting a maximum rated contents weight near 22,184 pounds, so a dense liquid pushes contents alone past 11 tons. Size your trailer axle and GVWR to that loaded weight, not to the empty tank - overloading the trailer, not the tank, is the failure that actually happens on a haul tank. At 1.9 SG this is already the heavy-duty rating tier, so heavy ag and water-treatment liquids on the compatibility list below - ferric chloride at 50%, calcium chloride at 40%, sulfuric acid at 98% - sit inside the tank's structural rating with no denser-rated poly tank to step up to. One common haul use is DEF at 32.5%: the body handles it, but DEF demands 316 stainless fittings, never PVC or carbon steel, because it contaminates on contact with carbon steel, copper, and zinc - the hardware spec there is load-bearing, not optional. Run the loaded-weight math against your trailer rating with the Tank Sizing Calculator and Tank Sizing Guide before you commit. See the technical drawing on this page for sump location and leg spacing.
Fittings - confirm before you order
Factory fitting sizes and positions are not yet confirmed for this SKU, so do not assume an outlet, vent, or fill configuration from the drawing alone. Call 866-418-1777 to verify the outlet, vent, and fill setup before ordering, and spec the fitting and gasket material to the chemical you are running - the compatibility notes below give the right materials for each.
Chemical compatibility
This is a polyethylene tank with a 1.9 SG rating - confirm the exact resin (HDLPE vs XLPE) with us before putting any chemical in it, since cross-linked and high-density linear polyethylene resist chemicals differently. The pairings below come from the OEM chemical-resistance chart and are concentration- and temperature-specific - always verify your exact concentration and operating temperature against the chart before service:
- Acetic Acid (60%) - PP/PVC fittings, EPDM gaskets - details
- Aluminum Sulfate (50%) - PVC fittings, EPDM gaskets - details
- Calcium Chloride (40%) - PVC fittings, EPDM gaskets - details
- DEF (32.5%) - 316SS fittings, EPDM gaskets - details
- Ethylene Glycol (100%) - PVC fittings, EPDM gaskets - details
- Ferric Chloride (50%), Ferric Sulfate (60%), Ferrous Sulfate (20%) - PVC fittings, EPDM gaskets - ferric chloride
- Hydrochloric Acid (37%) - PVC fittings, Viton gaskets - details
- Hydrofluoric Acid (48%) and Hydrofluosilicic Acid (26%) - PP/PVC fittings, Viton gaskets - details
- Hydrogen Peroxide (50%) - PVC fittings, Viton gaskets - details
- Magnesium Chloride (30%), Sodium Carbonate (30%), Sodium Thiosulfate (40%) - PVC fittings, EPDM gaskets - magnesium chloride
- Peracetic Acid (30%) - 316SS fittings, Aflas gaskets - details
- Phosphoric Acid (85%) - PVC fittings, Viton gaskets - details
- Polyaluminum Chloride - PVC fittings, EPDM gaskets - details
- Potassium Carbonate (50%) and Potassium Hydroxide (saturated) - PVC fittings, EPDM gaskets - potassium carbonate
- Propylene Glycol and Zinc Orthophosphate - PP/316SS fittings, EPDM gaskets - propylene glycol
- Sodium Bisulfate and Sodium Bisulfite - PVC/PP fittings, EPDM gaskets - details
- Sodium Hypochlorite (under 16.5%) - PVC fittings, Viton gaskets - details
- Sulfuric Acid (98%) - CPVC fittings, Viton gaskets - details
- Urea Solution (50%) - PP/PVC fittings, EPDM gaskets - details
- Ozonated Water (up to 10 PPM) - PVC fittings, EPDM gaskets
For the full picture across every chemical and concentration, see our chemical compatibility reference.
The mistake to avoid
The most expensive mistake on a horizontal leg tank is matching fitting and gasket material to the tank instead of the chemical. The polyethylene body tolerates a wide range, but the hardware does not - run sulfuric acid through a PVC bulkhead instead of CPVC, put DEF through anything but 316 stainless, or use EPDM where the chart calls for Viton or Aflas, and the fitting fails long before the wall does. Confirm your resin (HDLPE vs XLPE) and your exact concentration against the chart first. If you are hauling fertilizer blends on a trailer, our guides on applicator and leg tanks for fertilizer, portable utility tank DOT classification, and fertilizer-blend stratification cover the field issues that catch haulers off guard.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP. Get an exact number with the Freight Cost Estimator or call 866-418-1777 to lock in your order and confirm resin and fitting configuration before chemical service.
