The Snyder Industries 335 Gallon Plastic Horizontal Leg Tank (SKU SII-1004100C26) is a white polyethylene horizontal leg tank built for haul-and-transfer work, where the load rides on a trailer or truck bed and has to sit stable when partially full. It carries 335 gallons, measures 56 inches long by 44 inches wide by 49 inches high, and rests on a 44.0 x 56.0 inch footprint. The molded legs flatten the bottom so the tank self-supports and resists rolling, which is why operators searching for a horizontal leg tank or a Snyder horizontal tank land here.
Will it handle your load?
Filled with water, this tank weighs about 2,794 lb, so plan your trailer, tie-downs, and axle rating around that figure plus the tank's own dead weight. The shell carries a 1.9 specific gravity rating, putting the maximum rated contents weight near 5,308 lb - it is built to carry liquids considerably denser than water, including most agricultural and industrial chemistries. Run the numbers with the Tank Sizing Calculator and the Tank Sizing Guide to confirm the tank, fittings, and trailer all match the density of what you actually plan to haul before you load the first gallon.
Chemical compatibility
This is a polyethylene shell rated for 1.9 specific gravity. Because the resin record reads HDLPE with an open question, confirm whether your unit is HDLPE or XLPE (cross-linked) before putting it into chemical service - the two resins do not share the same chemical-resistance envelope, and cross-linked is generally the choice for aggressive oxidizers. The Snyder OEM chemical-resistance chart is concentration- and temperature-specific; match your exact concentration and service temperature to the chart before committing.
Per that chart, this tank handles a wide range of chemistries at the listed concentrations, including acetic acid (60%), aluminum sulfate (50%), calcium chloride (40%), DEF (32.5%), ethylene glycol (100%), ferric chloride (50%), ferric sulfate (60%), ferrous sulfate (20%), hydrochloric acid (37%), hydrofluoric acid (48%), hydrofluosilicic acid (26%), hydrogen peroxide (50%), magnesium chloride (30%), peracetic acid (30%), phosphoric acid (85%), polyaluminum chloride, potassium carbonate (50%), potassium hydroxide (saturated), propylene glycol, sodium bisulfate, sodium bisulfite, sodium carbonate (30%), sodium hypochlorite (<16.5%), sodium thiosulfate (40%), sulfuric acid (98%), urea solution (50%), zinc orthophosphate, and ozonated water (up to 10 PPM). The fitting and gasket materials are not interchangeable across these chemistries - per the chart, hydrofluoric, hydrofluosilicic, hydrogen peroxide, phosphoric, and sodium hypochlorite all call for Viton gaskets, sulfuric acid calls for a CPVC fitting with a Viton gasket, and DEF, peracetic acid, and zinc orthophosphate call for 316 stainless fittings (peracetic acid pairing with an Aflas gasket). The salt and glycol solutions use PVC or PP fittings with EPDM gaskets. Specify gaskets and fittings to the exact chemical; see the OEM chart and our chemical compatibility reference for the full concentration-by-temperature detail.
The mistake to avoid
The common error on a leg tank like this is sizing the shell to water alone. At 1.9 SG the maximum rated contents weight is roughly 5,308 lb, so a tank that hauls water easily can overload a trailer or its tie-downs when filled with a dense fertilizer blend or acid. Confirm the loaded weight against your equipment, watch liquid stratification on blended loads (see our guide on fertilizer-blend tank stratification), and check the DOT classification for portable utility hauling in our applicator and leg tank fertilizer guide. The leg and fitting layout is on the technical drawing on this page.
This tank ships LTL freight from the Snyder plant in Marked Tree, Arkansas, quoted live to your ZIP. Get a number in seconds with the Freight Cost Estimator, or call 866-418-1777 to confirm the right resin, fittings, and gaskets for your service before you order.
