The Snyder Industries 4500 Gallon ASTM Black Double Wall Tank (SKU 5620000N49) is a Lincoln, Nebraska-built polyethylene double wall tank engineered for bulk water storage where you need built-in secondary containment without pouring a separate concrete berm. This is the black tank buyers reach for when a single-wall vessel would force costly site work, and it answers the three questions that matter before you commit: will it hold what you need, how does it ship, and what mistake do you need to avoid.
Will it work for your site
This is a large-format vessel: 4500 gallons in a black polyethylene body standing 197 inches tall on a 102 x 102 inch footprint. The double wall design places one tank inside another, giving you an integral interstitial containment layer instead of an external dike. Two numbers drive your foundation: filled with water the load is roughly 37,530 pounds, and at the tank's 1.5 specific gravity structural rating the contents can reach about 56,295 pounds. That 1.5 SG figure is a shell capability, not a use recommendation — your pad, ring wall, or foundation has to be engineered for that mass on the 102 x 102 inch base. Fittings and outlets on a tank this size are configured at quote, so confirm your penetration and connection requirements and verify the overall dimensions against your site before ordering. If you are still sizing, the Tank Sizing Calculator and Tank Sizing Guide help you match volume to draw-down and refill rate.
The mistake to avoid
The trap on a wall tank this tall is under-building the foundation and skipping freeboard math. A 197-inch column of water generates real hydrostatic head, and the usable water you can actually store is less than the nameplate once you account for thermal expansion and freeboard. Our guide on Captor double-wall freeboard sizing per ASTM D1998 walks through the real volume you can count on. For cold-climate and reservoir installs, review rural fire-water reservoir design, and for long-service durability see where wall failures originate at the vapor-saturated headspace.
Freight and how to order
This double wall black tank ships LTL freight from the Snyder plant in Lincoln, Nebraska, quoted live to your ZIP based on distance and delivery site. A 197-inch tank is an oversized load, so accessible delivery and offload equipment matter — factor that in early. Get a freight number with the Freight Cost Estimator, or call 866-418-1777 and we will work the freight, fitting, and outlet details with you before you buy.
