The Snyder Industries 4500 Gallon ASTM XLPE Black Double Wall Tank is a crosslinked linear polyethylene shell built for high-volume bulk water and liquid storage where secondary containment is required. It holds 4,500 gallons in a black XLPE body and stands 197 inches tall on a 102-by-102-inch footprint, so the full containment package lives inside a square 8.5-foot pad. Because it is a double wall design, the primary tank sits inside an outer containment wall, which is why buyers searching for a black double wall tank or XLPE Snyder tank in this capacity keep landing on this model.
Will it hold what you are storing?
This tank carries a specific gravity rating of 1.5, meaning the shell is engineered for contents up to 1.5 times the density of water. Full of water, the contents alone weigh 37,530 pounds; loaded to the full 1.5 SG rating, the tank carries up to 56,295 pounds. Those numbers matter more than the gallon figure when you size a foundation. At max rating this tank puts over 28 tons on the pad, so a properly engineered reinforced concrete base and a level, fully supported footprint are not optional. Confirm your stored liquid's actual specific gravity against the 1.5 rating before you order, and use our Tank Sizing Calculator and Tank Sizing Guide to match capacity, weight, and footprint to your site. For remote or rural fire-water storage, our fire-water reservoir design guide covers NFPA 22 sizing discipline and freeze protection for cold climates.
The mistake to avoid
The most common error on a tall double wall tank like this one is treating the outer wall as extra usable volume or skipping freeboard planning. The rated capacity is the primary tank volume; the interstitial space between walls is containment, not storage. If your service involves thermal expansion or fill-and-draw cycling, plan freeboard per ASTM D1998 accordingly. At 197 inches tall, the vapor-saturated headspace at the top of the wall is also where premature failures tend to originate, which is worth understanding before you spec a tall shell; our guide on wall thickness at the vapor-saturated headspace walks through the ASTM D1998 sizing logic operators need. Review the technical drawing on this page for fitting locations and overall dimensions before setting the pad.
Freight
This tank ships LTL freight, quoted live to your ZIP code, from the Snyder plant in Lincoln, Nebraska. Given the height and loaded weight class, delivery is a dedicated LTL move, so plan for offload equipment at your site. Get a real number for your address with our Freight Cost Estimator, or call 866-418-1777 and we will quote the shipment and confirm lead time.
