The Snyder Industries 250 Gallon Double Wall Tank (SKU 5990502N51) is a black, double-contained vertical built from high density linear polyethylene and rated to a specific gravity of 1.9. It stands 83 inches tall on a 34 x 34 inch footprint, so the molded secondary containment occupies one floor space instead of a separate dike or basin. This is the HDPE double wall tank operators reach for when they need built-in spill protection without pouring a containment pad, and it ships from Lincoln, Nebraska.
Will this tank work for your application?
The inner tank holds 250 gallons. Filled with water that contents load is about 2,085 pounds, but the 1.9 specific gravity rating means the inner wall is engineered to carry up to roughly 3,962 pounds of contents, so this black double wall tank covers dense liquids many water-only tanks cannot. Two openings serve the inner vessel: a 14" PE threaded/vented port at the top where you mate your fill and vent hardware, and a manway with 11-3/8" access for cleaning and inspection. Confirm your fittings and gaskets are sized to those exact openings before ordering. Run your numbers through the Tank Sizing Calculator and the Tank Sizing Guide to confirm the working volume you can actually use once freeboard is accounted for. Exact fitting placement and elevations are shown on the technical drawing on this page.
Plan the footprint, header height, and floor load
At 83 inches tall the unit will not pass upright under an 80-inch standard door header, so plan your route and ceiling clearance before delivery. The 34 x 34 inch base is the planning dimension for containment-pad-free siting, and the slab or floor underneath must support the full rated load: up to roughly 3,962 pounds of contents at 1.9 specific gravity, plus the tank itself. Size for freeboard rather than to the brim, and keep the interstitial space between the inner and outer wall clear so any inner-wall weep stays visible and caught.
One mistake to avoid
The 1.9 specific gravity is the inner tank's structural rating, not a pass on fitting and gasket selection. The threaded vent and manway hardware still have to be matched to your fluid and its temperature. Confirm your fluid's density against that 1.9 number before you fill. The Snyder Captor double-wall freeboard sizing guide walks through the ASTM D1998 logic, and the wall-thickness at the vapor headspace guide explains why the upper, vapor-exposed band deserves attention.
This double wall tank ships LTL freight from the Lincoln, NE plant, quoted live to your ZIP. Because the secondary containment is molded around the inner vessel the unit is bulky and travels on its own, and transit time and cost scale with distance from Lincoln. Get an exact number with the Freight Cost Estimator or call 866-418-1777 and we will quote it to your delivery address. For remote or fire-water duty, the rural fire-water reservoir design guide covers siting and freeze protection that affect where this tank lands.
