The Enduraplas 300 Gallon Yellow Horizontal Sump Bottom Leg Tank ships as a 1.9 specific-gravity polyethylene tank rated for dense liquids, and that 1.9 rating is the reason this model exists. It measures 36 inches tall by 46 inches wide by 74 inches long, so the footprint sits at 46.0 x 74.0 inches on its integrated frame. The molded sump-bottom leg-tank frame drains toward the outlet and is built for skid mounting and transport-style ag and fluid-handling work, keeping a low, stable profile rather than a tall vertical. Empty water fill weighs 2,502 pounds; at the full 1.9 rating the tank and contents reach 4,754 pounds, so plan the supporting surface, mount, and any trailer deck around that loaded figure.
Will this 300 gallon horizontal leg tank work for your job?
This is a 300 gallon horizontal leg tank with a sump bottom, sized for operations that need a low center of gravity rather than height. The 36-inch profile keeps the load down for portable and applicator-style use. Run the loaded numbers before you commit: water fills it to 2,502 pounds, and the maximum rated contents weight is 4,754 pounds when you load a fluid near the 1.9 specific-gravity ceiling. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm your liquid's weight against your mount and your spreader or trailer. For DOT and agricultural-exemption context on portable utility and applicator tanks, see our guides on applicator and leg tanks for fertilizer and loaf-style portable utility tanks under 49 CFR.
Chemical compatibility
This tank is molded from polyethylene with a 1.9 specific-gravity rating, which is why it suits heavier chemical and fertilizer service rather than plain water duty. The resin is listed as HDLPE but carries a question mark in our data, so confirm whether your tank is HDLPE or XLPE before putting any chemical into service, because that distinction changes long-term resistance. Factory fitting and gasket hardware is not pre-specified for this model, so select PVC, PP, CPVC, or 316SS bodies and EPDM, Viton, or Aflas seals per the pairings below and confirm the outlet and sump configuration on the technical drawing before plumbing. Most pairings use PVC bodies with EPDM seals; the strong oxidizers and acids require Viton, peracetic acid requires Aflas, and DEF, peracetic acid, and 98% sulfuric require metal or CPVC bodies (316SS or CPVC) rather than PVC. Every pairing comes from the OEM chemical-resistance chart and is concentration- and temperature-specific, so match your exact strength and operating temperature to the chart before ordering hardware.
Chemicals this tank handles, with the recommended fitting and gasket materials: Acetic Acid (60%, PP/PVC, EPDM), 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 (under 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). Always verify your concentration and temperature against the OEM chemical-resistance chart, and see our full chemical compatibility resource.
The mistake to avoid
The single most common error on a 1.9-rated tank is treating the rating as a guarantee for any liquid. The 1.9 specific gravity sets the density ceiling, not your chemical's resistance behavior. Confirm the resin grade with us before aggressive chemical service, match your fitting and gasket materials to the chart pairings above, and never select hardware off a different concentration than the one you are actually storing. The technical drawing on this page shows the molded sump, outlet location, and frame geometry to confirm before you plumb it.
This tank ships LTL freight from the plant in Neche, ND, with freight quoted live to your ZIP. Get an exact number with the Freight Cost Estimator, or call 866-418-1777 to confirm fit, fittings, and delivery. For blend and fertilizer programs, also read our guide on fertilizer-blend tank stratification and mixing protocol.
