The Enduraplas 1600 Gallon Green Horizontal Sump Bottom Leg Tank (SKU THD01600G) is a low-profile, 1,600-gallon polyethylene haul tank built to ride on a trailer or skid and empty cleanly. At 130 inches long, 71 inches wide, and 59 inches tall, it rides on integrated legs with a sump bottom that drains toward the outlet so you are not leaving product behind at the end of a run. It carries a 1.9 specific gravity rating, which is what makes this tank a serious horizontal leg tank for heavy ag chemicals and concentrated solutions, not just water.
Will it handle your load?
Capacity is the easy part; weight is where horizontal leg tanks catch people. Filled with water, this tank carries about 13,344 lbs. At its full 1.9 SG rating, the maximum rated contents weight climbs to roughly 25,354 lbs. That is the number your trailer frame, axles, and tongue weight have to be rated for before you ever pull onto a road. Run the math against your equipment, and if you are deciding between sizes or matching a tank to an existing trailer, the Tank Sizing Calculator and Tank Sizing Guide walk you through full-load weight versus your rig's rated capacity. The footprint is 71.0 x 130.0 inches, so confirm your deck or cradle supports the full length before you spec mounting. This listing does not carry a documented factory fitting or outlet schedule, so confirm outlet size and location, and any bulkhead fittings, before you specify plumbing — do not assume the sump outlet is pre-sized to your hose. For DOT classification and trailer scope on horizontal leg and applicator tanks, see our guide on applicator and leg tanks for fertilizer.
Chemical compatibility
This polyethylene tank is rated to 1.9 specific gravity, which is why it suits dense ag and water-treatment chemistry. The resin grade is to be confirmed at quote — verify whether your tank is linear (HDLPE) or cross-linked (XLPE) before any chemical service, because that distinction changes what it can safely hold; call 866-418-1777 and we will confirm it for your order. Always size the tank's SG rating to the full weight of your chemical at concentration, and match fittings and gaskets to the product. At 1.9 SG this is already the heaviest-rated poly option for this footprint — there is no denser-fluid poly tank to step up to. The chemicals below are workable in a 1.9 SG poly tank at the listed concentrations, with the fitting and gasket materials our chemical-resistance chart specifies (that chart is concentration- and temperature-specific, so verify your exact conditions against it):
- 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 (concentration to be specified) - PVC fittings, EPDM gaskets
- Potassium Carbonate (50%) - PVC fittings, EPDM gaskets
- Potassium Hydroxide (saturated) - PVC fittings, EPDM gaskets
- Propylene Glycol (concentration to be specified) - PP/316SS fittings, EPDM gaskets
- Sodium Bisulfate (concentration to be specified) - PVC/PP fittings, EPDM gaskets
- Sodium Bisulfite (concentration to be specified) - 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 (concentration to be specified) - PP/316SS fittings, EPDM gaskets
- Ozonated Water (up to 10 PPM) - PVC fittings, EPDM gaskets
For the full picture and to confirm your specific product, concentration, and temperature, check our chemical compatibility resource. If you are blending fertilizer, our guide on fertilizer-blend tank stratification covers the layering and mixing protocols that keep your spreader on-spec.
The mistake to avoid
The single biggest error on a 1.9 SG tank like this one is matching the rating to volume instead of weight. A 1,600-gallon tank does not mean you can put 1,600 gallons of any chemical in it; it means the poly wall is rated to carry contents up to 1.9 specific gravity. Confirm your chemical's specific gravity at its working concentration, then confirm your trailer and fittings are rated for the resulting load. Pair the wrong fitting or gasket material with an aggressive chemical and you will find the leak the hard way.
This is a single-origin item shipping LTL from the Neche, ND plant, quoted live to your ZIP — buyers outside the Upper Midwest should plan for a longer-haul LTL leg, so quote before you commit. Get your exact freight number with the Freight Cost Estimator, or call us at 866-418-1777 and we will spec the right tank, trailer fit, and fittings for your haul. List price is shown above, before freight.
