The Snyder Industries 300 Gallon Horizontal Leg Tank (SKU SII-1320000N42) is built for haul-and-transport duty in agriculture and chemical service. Molded in white cross-linked polyethylene (XLPE) and rated to a 1.9 specific gravity, it holds 300 gallons in a horizontal leg-tank body measuring 72 inches long, 38 inches wide, and 43 inches tall. The integrated legs give it a stable 38.0 x 72.0 inch footprint so it sits flat on a trailer, skid, or applicator frame without a cradle. If you have been searching for a 300 gallon horizontal leg tank in XLPE, this is the configuration that handles the dense liquids a standard 1.0-1.5 SG tank cannot.
Will this tank handle your load?
Capacity drives weight, and weight drives everything downstream — your trailer rating, your hitch, and your freight quote. Filled with water (1.0 SG), this 300 gallon tank carries about 2,502 pounds of contents. At its full 1.9 SG rating, the tank is engineered for up to 4,754 pounds of contents, which is what makes it suitable for heavy fertilizer blends, brines, and concentrated solutions rather than just water. This 1.9 SG XLPE construction is the heavy-duty tier — it already covers the dense chemistries that exceed standard 1.0–1.5 SG tanks, so there is no step-up tank to chase for the fluids listed below. Before you mount it, run your liquid's specific gravity and target fill level through the Tank Sizing Calculator and confirm your trailer or frame is rated for the loaded weight. The Tank Sizing Guide walks through how SG changes the math on a tank you plan to haul. For how leg and applicator tanks are classified for road use, see our guide on applicator and leg tanks for fertilizer and the companion piece on portable utility tanks and the 49 CFR 173.5 agricultural exemption.
Chemical compatibility
This is an XLPE tank rated to 1.9 specific gravity, which is why it can carry denser and more aggressive chemistries than a standard polyethylene water tank. Compatibility always depends on the OEM chemical-resistance chart at the specific concentration and temperature of your application, and on matching the right fitting and gasket materials. There are really three hardware kits to choose from here: PVC or PP fittings with EPDM gaskets for the brine, glycol, and carbonate majority; 316 stainless fittings with EPDM gaskets for DEF; and PP or PVC fittings with Viton gaskets for Hydrofluosilicic Acid. Based on Snyder's chemical-resistance data, this tank suits the following at the listed concentrations:
- Acetic Acid (60%) — PP or 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
- Hydrofluosilicic Acid (26%) — PP or PVC fittings, Viton gaskets
- Magnesium Chloride (30%) — PVC fittings, EPDM gaskets
- Polyaluminum Chloride — PVC fittings, EPDM gaskets
- Potassium Carbonate (50%) — PVC fittings, EPDM gaskets
- Potassium Hydroxide (saturated) — PVC fittings, EPDM gaskets
- Propylene Glycol — PP or 316SS fittings, EPDM gaskets
- Sodium Carbonate (30%) — PVC fittings, EPDM gaskets
- Sodium Thiosulfate (40%) — PVC fittings, EPDM gaskets
- Urea Solution (50%) — PP or PVC fittings, EPDM gaskets
- Ozonated Water (up to 10 PPM) — PVC fittings, EPDM gaskets
If DEF is your application, treat the hardware as non-negotiable: 316 stainless fittings with EPDM gaskets are mandatory because the 32.5% urea solution corrodes carbon steel and most non-stainless metals, degrading incompatible hardware long before the XLPE tank shows any wear. Always verify against the OEM chemical-resistance chart at your exact concentration and temperature before putting any chemical in service, and review our full chemical compatibility reference. This listing does not ship with fittings or outlets pre-configured — they are specified to your application, so call 866-418-1777 to spec the correct fitting and gasket kit (PVC, PP, or 316SS with EPDM or Viton, per the table above) when you order.
The mistake to avoid
The most common error on a tank like this is treating its 1.9 SG rating as a blanket green light for any heavy chemical. The SG rating tells you the tank wall can structurally handle the load; it does not tell you the XLPE resin chemically resists your fluid, and it does not address your fittings and gaskets. A DEF setup needs 316 stainless fittings, not the PVC that works for most brines — get that wrong and the metal corrodes long before the tank does. Confirm the chemistry, the concentration, the temperature, and the fitting and gasket materials together. When you are mixing dense fertilizer blends, also read up on tank stratification and salting-out so a settled blend does not run your spreader off-spec, and if secondary containment is in scope, the Snyder Captor double-wall SPCC walkthrough covers 40 CFR 112. Refer to the technical drawing on this page for dimensional detail.
This tank ships LTL freight from the nearest Snyder plant — Lincoln, NE or Philippi, WV — and freight is quoted live to your ZIP. The Philippi, WV plant typically wins on freight for Eastern and Southeastern ZIPs and Lincoln, NE for Central and Western ones, and the Estimator picks the nearest origin automatically. Get your exact cost with the Freight Cost Estimator or call us at 866-418-1777 and we will quote it for you.
