The Enduraplas 300 Gallon Green Horizontal Sump Bottom Leg Tank (SKU THD00300G) is a low-profile horizontal leg tank built for transport and field dispensing. It measures 74 inches long by 46 inches wide by 34 inches high - a 46 x 74 inch footprint that sits low and stable on a truck bed, skid, or trailer deck. Orient the 74 inch length fore-aft so the 46 inch width clears your standard bed or skid rails, and check your deck width against that 46 inch dimension before you order. The sump bottom drains toward the sump, and the molded legs keep the tank cradled and level on flat surfaces. This is one of those 300 gallon horizontal leg tank sizes that handles full-day applicator and shuttle work without monopolizing the platform.
Will it work for your job?
Enduraplas rates this polyethylene shell to a 1.9 specific gravity, which is what makes it a genuine chemical-haul tank rather than a water-only vessel. Filled with water it weighs about 2,502 pounds; at its maximum rated contents weight it carries roughly 4,754 pounds. That spread is the whole point of the 1.9 SG rating - it gives you headroom to haul fluids substantially denser than water. Size your trailer, hitch, and tie-downs to the 4,754 pound figure if you intend to run heavy product, not to the water number. The SG 1.9 rating is firm; the resin type is the one variable to confirm before chemical service. Use the Tank Sizing Calculator and the Tank Sizing Guide to match this capacity and weight to your equipment before you commit.
Chemical compatibility
This tank is molded from polyethylene with a 1.9 specific gravity rating. The resin is listed as HDLPE, but that designation is unconfirmed in our data, so confirm HDLPE versus XLPE with us before placing this tank into chemical service - the two crosslink behaviors handle aggressive chemistries differently. Always verify your specific chemical against the OEM chemical-resistance chart at your exact concentration and operating temperature; the ratings below are concentration-specific.
Chemicals compatible with this tank's resin and 1.9 SG rating, with the recommended fitting and gasket materials, include: Acetic Acid at 60% (PP/PVC fittings, EPDM gaskets), Aluminum Sulfate at 50% (PVC, EPDM), Calcium Chloride at 40% (PVC, EPDM), DEF at 32.5% (316SS, EPDM), Ethylene Glycol at 100% (PVC, EPDM), Ferric Chloride at 50% (PVC, EPDM), Ferric Sulfate at 60% (PVC, EPDM), Ferrous Sulfate at 20% (PVC, EPDM), Hydrochloric Acid at 37% (PVC, Viton), Hydrofluoric Acid at 48% (PP/PVC, Viton), Hydrofluosilicic Acid at 26% (PP/PVC, Viton), Hydrogen Peroxide at 50% (PVC, Viton), Magnesium Chloride at 30% (PVC, EPDM), Peracetic Acid at 30% (316SS, Aflas), Phosphoric Acid at 85% (PVC, Viton), Polyaluminum Chloride (PVC, EPDM), Potassium Carbonate at 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 at 30% (PVC, EPDM), Sodium Hypochlorite below 16.5% (PVC, Viton), Sodium Thiosulfate at 40% (PVC, EPDM), Sulfuric Acid at 98% (CPVC, Viton), Urea Solution at 50% (PP/PVC, EPDM), Zinc Orthophosphate (PP/316SS, EPDM), and Ozonated Water up to 10 PPM (PVC, EPDM). Match your fitting and gasket materials to the chemical you actually run, and review the full chemical compatibility reference before ordering.
The mistake to avoid
The most common error on a tank like this is buying it for a dense chemical and then dropping in the wrong fittings and gaskets. The 1.9 SG shell is rated for heavy product, but a Viton gasket where the chart calls for EPDM - or a PVC fitting where it calls for 316SS or CPVC - is what fails first, not the tank. For the corrosive acids above the recommended elastomer shifts from EPDM to Viton, and DEF and peracetic service call for 316SS hardware. Because the fitting package on this tank is configured to order, confirm both the resin (HDLPE versus XLPE) and the fitting and gasket combination for your exact chemical and concentration before you put product in.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, with freight quoted live to your ZIP code - use the Freight Cost Estimator for a freight estimate, or call 866-418-1777 to lock in your order and confirm fittings. For configuration help on applicator and leg-tank setups, see our guides on applicator and leg tanks for fertilizer, portable utility tank DOT classification, and fertilizer-blend tank stratification.
