The Enduraplas 100 Gallon White Horizontal Leg Tank (SKU THF00100W) is a polyethylene leg tank built low and wide for haul duty on a truck bed, trailer, or skid. It holds 100 gallons in a Natural White body that stands 21 inches tall on a 41 x 46 inch footprint, and it carries a 1.9 specific gravity rating, so the wall and molded-in legs are engineered to support liquids substantially heavier than water. That makes it a working horizontal leg tank for fertilizer, ag chemical, and heavy-liquid transport, not just a 100 gallon water carrier.
Will it work for your load?
Match your liquid's weight to the tank's ratings before you fill it. Filled with water (specific gravity 1.0), this 100 gallon tank carries roughly 834 pounds of contents; at its full 1.9 specific gravity rating it is built to handle up to 1,585 pounds of contents. Stay inside that 1,585 lb ceiling. Most common ag liquids land well within it, but if your fertilizer blend, brine, or concentrate has a specific gravity above 1.9, this tank is not rated for it, so check the SG of your exact fluid first. The 41 x 46 inch footprint and 21 inch profile keep the load low and stable down a field road. If you are not sure which size fits your spray rig or nurse-tank setup, run the numbers with our Tank Sizing Calculator and the Tank Sizing Guide. This tank is also DEF-ready, rated for 32.5% diesel exhaust fluid when fitted with 316 stainless fittings.
Chemical compatibility
The resin on record is listed as HDLPE but is not confirmed, so confirm HDLPE versus XLPE (cross-linked) before committing this tank to chemical service, as the two resins resist different agents. The tank carries a 1.9 specific gravity rating. Compatibility is always concentration- and temperature-specific, so verify your exact chemical and strength against the OEM chemical-resistance chart before filling. The single most expensive mistake on a tank like this is pairing the wrong gasket, EPDM where Viton or Aflas is required. The chemicals below are the ones the data confirms, with the fitting and gasket materials that actually hold up:
- Acetic acid 60% — PP/PVC fittings, EPDM gasket
- Aluminum sulfate 50% — PVC, EPDM
- Calcium chloride 40% — PVC, EPDM
- DEF (diesel exhaust fluid) 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
- Ozonated water up to 10 PPM — PVC, EPDM (verify ozone service by request)
Note the oxidizers and strong acids, hydrochloric, hydrofluoric, hydrofluosilicic, hydrogen peroxide, phosphoric, sulfuric, and sodium hypochlorite, all require Viton (and sulfuric requires CPVC fittings, peracetic acid requires Aflas) rather than EPDM. Order the gasket the chart calls for, not the one in the standard kit. See our full chemical compatibility reference and confirm every chemical and concentration against the OEM chart before you order fittings.
Freight and ordering
This leg tank ships LTL freight from the plant in Neche, North Dakota, quoted live to your ZIP code. Because freight on a tank this size depends entirely on where it is going, pull your real number from our Freight Cost Estimator before you buy. For DOT and ag-haul context, our guides on applicator and leg tanks for fertilizer, portable utility tanks and the 49 CFR ag exemption, and fertilizer-blend tank stratification are worth reading before your first fill. Review the technical drawing on this page for the fitting layout, and call us at 866-418-1777 with your liquid and ZIP, or if your fluid exceeds 1.9 specific gravity and you need to size up, and we will confirm the right tank.
