The Snyder Industries 12500 Gallon ASTM HDPE Double Wall Tank (SKU 1031100N45) is a large-volume containment tank molded from high density linear polyethylene in natural white. It carries a 12,500-gallon capacity in a double-wall configuration, meaning the primary tank sits inside a secondary containment shell for spill protection. The tank stands 274 inches tall on a 142 x 142 inch footprint and is rated to a specific gravity of 1.9, which gives it substantial density headroom over plain water service.
Will it work for your site?
Confirm four things before you buy: footprint, height clearance, engineered pad, and receiving-end offload. This tank occupies a 142.0 x 142.0 inch square and rises 274 inches, so verify overhead and access clearance at the install pad. On weight, plan the foundation around real numbers, not a guess: filled with water this tank carries roughly 104,250 lb of contents, and at its full 1.9 specific gravity rating the contents can reach about 198,075 lb. Engineer the pad and ring wall for the heavier 198,075 lb figure, and confirm you have offload equipment rated for a tank of this size at delivery. Use the Tank Sizing Calculator and the Tank Sizing Guide to match capacity and freeboard to your duty cycle.
Fittings and access
Per the technical drawing on this page, this double wall tank is configured with a flange, an 18" PE threaded and vented fitting, and a manway with 15" access. The flange is a gasketed joint, so confirm gasket material and bolt-up against your service fluid and the drawing's flange spec before piping; seal the 18" PE threaded/vented port and the manway per the drawing as well. Review the drawing for exact fitting locations and elevations before you set piping, vent, and fill routing. For why the vapor-saturated headspace zone matters to long-term wall integrity on an HDPE tank, see our guide on HDPE tank wall thickness at the vapor-saturated headspace.
Freight and next steps
At more than 12,000 gallons this is a dedicated LTL move. It ships from the Snyder plant in Lincoln, NE, and freight is quoted live to your ZIP based on distance and delivery conditions. Get a real number with the Freight Cost Estimator before you commit. For double-wall sizing and freeboard, see our guide on Snyder double-wall freeboard sizing per ASTM D1998, and for rural or remote fire-protection storage, our guide on fire-water reservoir design and NFPA 22 sizing. Questions on fittings, footprint, or delivery? Call 866-418-1777 and we will confirm the drawing details and freight before you order.
