The Enduraplas 800 Gallon White Horizontal Leg Tank is a low-profile haul tank built to move liquid on a trailer or skid. The footprint is 60 inches wide by 94 inches long, standing 48 inches tall, in natural white polyethylene translucent enough to give you level visibility through the wall at a glance (it is a visual check, not a calibrated gauge). As a horizontal leg tank, the legs are molded into the bottom to give the parked tank a stable base. Whether you call it a horizontal leg tank, an 800 gallon horizontal tank, or just an Enduraplas leg tank, this is the 800-gallon size in the horizontal leg-tank family.
Will it do the job
This tank carries an 800 gallon rated capacity and a 1.9 specific gravity rating, which is what makes it a genuine haul tank rather than a water-only vessel. Plain water fills it to roughly 6,672 pounds, but the 1.9 SG rating means the shell is engineered to carry contents up to about 12,677 pounds at full volume. That headroom is what lets you run dense fertilizer blends and heavy chemical solutions without overstressing the wall. The 1.9 SG / ~12,677 lb figure is the top of this tank's envelope, not a target to push past; any liquid denser than 1.9 SG at full volume sits outside this tank's rating and needs a different solution confirmed by phone. Use the Tank Sizing Calculator to match your liquid's weight to the rating, and read the Tank Sizing Guide before you commit to a haul configuration.
Hauling it on a trailer
Before you build a haul setup, connect that ~12,677 lb full-load number to the trailer and axle ratings your rig can legally carry - that calculated weight, not the empty tank, is the real go/no-go. The field notes in our guide on applicator and leg tanks for fertilizer and DOT non-roadable trailer scope and on loaf-style portable utility tanks under the 49 CFR 173.5 agricultural exemption cover the classification and roadability questions that decide whether a loaded leg tank is legal on your trailer. For fertilizer service specifically, our guide on blend-tank stratification covers the mixing and layering issues that catch a loaded tank off-spec. Fitting sizes and outlet locations are not specified in this listing - read them off the technical drawing on this page or call to confirm before you order any hardware.
Chemical compatibility (pending resin confirmation)
This shell carries a 1.9 specific gravity rating, but the resin code is recorded with a question mark - HDLPE versus XLPE is unconfirmed. That distinction matters: crosslinked (XLPE) and linear (HDLPE) walls behave differently against oxidizers and strong acids, so confirm the resin with us before committing this tank to any chemical service. Treat the list below as concentration-keyed guidance pending that confirmation, and match the fitting and gasket material to the chemical - not just to the tank. Verify your own conditions against the OEM chemical-resistance chart, which is concentration- and temperature-specific.
- Acetic Acid (60%) - PP/PVC fittings, EPDM gaskets
- Aluminum Sulfate (50%) - PVC fittings, EPDM gaskets
- Calcium Chloride (40%) - PVC fittings, EPDM gaskets
- DEF (32.5%) - 316SS fittings, EPDM gaskets
- Ethylene Glycol (100%) - PVC fittings, EPDM gaskets
- Ferric Chloride (50%) - PVC fittings, EPDM gaskets
- Ferric Sulfate (60%) - PVC fittings, EPDM gaskets
- Ferrous Sulfate (20%) - PVC fittings, EPDM gaskets
- Hydrochloric Acid (37%) - PVC fittings, Viton gaskets
- Hydrofluoric Acid (48%) - PP/PVC fittings, Viton gaskets
- Hydrofluosilicic Acid (26%) - PP/PVC fittings, Viton gaskets
- Hydrogen Peroxide (50%) - PVC fittings, Viton gaskets
- Magnesium Chloride (30%) - PVC fittings, EPDM gaskets
- Peracetic Acid (30%) - 316SS fittings, Aflas gaskets
- Phosphoric Acid (85%) - PVC fittings, Viton gaskets
- Polyaluminum Chloride - PVC fittings, EPDM gaskets
- Potassium Carbonate (50%) - PVC fittings, EPDM gaskets
- Potassium Hydroxide (saturated) - PVC fittings, EPDM gaskets
- Propylene Glycol - PP/316SS fittings, EPDM gaskets
- Sodium Bisulfate - PVC/PP fittings, EPDM gaskets
- Sodium Bisulfite - PVC/PP fittings, EPDM gaskets
- Sodium Carbonate (30%) - PVC fittings, EPDM gaskets
- Sodium Hypochlorite (<16.5%) - PVC fittings, Viton gaskets
- Sodium Thiosulfate (40%) - PVC fittings, EPDM gaskets
- Sulfuric Acid (98%) - CPVC fittings, Viton gaskets
- Urea Solution (50%) - PP/PVC fittings, EPDM gaskets
- Zinc Orthophosphate - PP/316SS fittings, EPDM gaskets
- Ozonated Water (up to 10 PPM) - PVC fittings, EPDM gaskets
Do not default to common EPDM/PVC hardware on the aggressive entries. The Viton-only acids - hydrochloric (37%), phosphoric (85%), sulfuric (98% on CPVC), hydrogen peroxide (50%), and sodium hypochlorite (<16.5%) - and the Aflas-only peracetic acid (30%) will not seal correctly with EPDM. DEF (32.5%) and peracetic acid call for 316SS fittings specifically. The full list and concentration notes live on our chemical compatibility resource.
The mistake to avoid
The single biggest error on a 1.9 SG haul tank is loading on weight you assumed rather than weight you calculated. Water weighs 6,672 pounds at full; a dense fertilizer or acid solution can run to roughly 12,677 pounds in the same tank, and that is the wall's design limit, not a target to exceed. Do not partially fill and then drive hard either - unbaffled liquid surges on a trailer and shifts your load. And because the resin code carries a question mark, do not assume crosslinked chemical resistance until we confirm HDLPE versus XLPE for your specific chemical.
This Enduraplas 800 gallon leg tank ships LTL from the Enduraplas plant in Neche, North Dakota, with freight quoted live to your ZIP. Get your exact number with the Freight Cost Estimator, or call 866-418-1777 to lock in your configuration, confirm the outlet sizes off the drawing, and verify the resin before chemical service.
