The Snyder Industries 4100 Gallon ASTM Black Vertical Storage Tank (SKU 7360000N49) is a large-format polyethylene vertical tank measuring 130 in H x 102 in W x 102 in L. It holds 4,100 gallons in a single black vertical body on a 102 x 102-inch square footprint, and at roughly 10.8 feet tall its height is the load-in constraint to plan for. The black resin blocks light to slow algae growth in stored water — one reason this vertical storage tank is a common choice for bulk water storage, fire-water reserves, and industrial water reuse.
Will it work for your site?
This is polyethylene rated to 1.5 specific gravity, so the wall is built to carry contents up to 1.5 times the density of water — 1.5 SG is the top of the standard poly ladder, so it already covers dense liquids with no step-up needed. Filled with water, the contents weigh about 34,194 lb; at the full 1.5 SG rating the contents alone can reach 51,291 lb. Plan the pad for that load: a 102 x 102-inch footprint needs a level, continuously supported base rated for the filled weight. Run your numbers through the Tank Sizing Calculator and the Tank Sizing Guide before you pour, and if you are building a concrete base see our guide on concrete pad sizing for above-ground polyethylene tanks.
Fittings and access
Per the technical drawing on this page, this tank is configured with a flange, an 18-inch polyethylene threaded/vented fitting, a manway with 15-inch access opening, a 12 x 23-inch fitting, and a flat mounting area for a field-added fitting. The manway gives you a 15-inch access point for interior inspection and cleaning. Bulkhead fittings and gaskets are sized to the port shown on the drawing, so confirm the flange bolt pattern and the 18-inch threaded port thread before ordering seals, and verify every fitting size and elevation against the technical drawing before you plumb your inlet, outlet, vent, and overflow — the drawing is the authority for exact placement.
Common applications
At 4,100 gallons this size lands in bulk water storage territory: rural and remote fire-water reservoirs, industrial water reuse trains, and general bulk water holding. If you are sizing a private fire-protection reserve, our guide on fire-water reservoir tank design walks through NFPA 22 sizing and freeze protection, and our industrial water reuse topology guide covers grey-water, rainwater, and condensate aggregation.
The one mistake to avoid: undersizing your foundation for a full 51,291-lb rated load. This tank moves as an LTL freight load and ships from the Snyder plant in Philippi, West Virginia, with freight quoted live to your ZIP. Get your rate from our Freight Cost Estimator or call 866-418-1777 to lock in a quote and confirm site access for a tank this size.
