The Snyder Industries 535 Gallon Plastic Horizontal Leg Tank (SKU SII-1400300C26) is built for transport. The horizontal body rides low on integrated legs, and the molded leg supports cradle the load so the tank sits flat and stable on a flatbed, skid, or sprayer trailer. It holds 535 gallons in white polyethylene, measures 78 inches long by 47 inches wide by 52 inches tall, and carries a 1.9 specific gravity rating - the high-density rating that lets this horizontal leg tank haul fluids substantially heavier than water.
Will it work for your load?
Match the tank to the weight you intend to move, not just the gallon number. Filled with plain water this tank carries about 4,462 pounds of contents. Because it is rated to 1.9 specific gravity, it is built to carry up to roughly 8,478 pounds of denser product - which is why it suits heavy ag chemicals, brines, and fertilizer blends rather than water alone. Work backward from your fluid: a product at 1.5 specific gravity loads about 6,693 pounds at full volume, leaving headroom to fill to the brim; at 1.9 specific gravity you are at the structural ceiling when the tank is full. The footprint is 47.0 x 78.0 inches and the loaded profile stands 52 inches tall - the number a flatbed or sprayer-trailer operator needs for bridge clearance and tie-down planning. Confirm your trailer deck or skid frame supports the full loaded weight across the legs before you fill. If you are weighing this against another size, run your fluid and gallons through the Tank Sizing Calculator and the Tank Sizing Guide to confirm the rated capacity covers your product density. This listing does not specify the molded fitting sizes or locations, so call 866-418-1777 to confirm the bulkhead and outlet configuration for your plumbing before ordering.
Chemical compatibility
This is a polyethylene tank carrying a 1.9 specific gravity rating. Our records list the resin as HDLPE with a question mark, meaning the resin type is not confirmed - so before you commit this tank to chemical service, verify whether your unit is HDLPE or XLPE (crosslinked), since the two resins do not behave identically with aggressive chemistries. At the 1.9 SG rating, this body is suited to a wide range of dense solutions. The following are compatible at the listed concentrations, paired with the fitting and gasket materials that hold up against each one. Always verify against the manufacturer's chemical-resistance chart for your exact concentration and temperature, since both shift the answer.
- 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 under 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
For the full picture, work from our chemical compatibility reference and match the fitting and gasket materials to your chemistry. Note the split: sodium hypochlorite, the acids, and hydrogen peroxide call for Viton (or Aflas for peracetic acid), while most salts and glycols run on EPDM. Getting the gasket wrong is the most common mistake on a chemical haul - the tank wall may hold while an EPDM gasket fails against a Viton-rated acid.
The mistake to avoid
Do not treat the gallon number as the limit. The real ceiling on this tank is weight and density, set by the 1.9 specific gravity rating. Fill it with a product heavier than water and you can hit the structural load limit well before the tank is full - so size to your fluid's density and the roughly 8,478-pound rated contents weight, not to 535 gallons of water. Before any chemical service, confirm the resin (HDLPE vs XLPE) and verify your specific concentration on the OEM chart. For transport applications, the leg-tank fertilizer and DOT scope guide, the 49 CFR 173.5 agricultural exemption walkthrough, and the fertilizer-blend stratification guide are worth reading before you load.
Freight
This tank ships LTL freight from the Snyder plant in Marked Tree, Arkansas, with the rate quoted live to your ZIP - no flat estimate that misses on a 535-gallon leg tank. Get your number from the Freight Cost Estimator, or call 866-418-1777 and we will quote the lane, confirm the right tank for your product, and walk through the fitting configuration before you order.
