The Enduraplas 550 Gallon HDPE Tank (SKU 1800200N45) is a vertical white polyethylene storage tank for above-ground water service. It stands 75 inches tall on a 48-inch by 48-inch square footprint, giving you a compact base for a 550-gallon working volume - a practical fit where floor space is tight but head clearance is available. The product name references ASTM compliance; confirm the specific standard on the technical drawing before you spec it into a permitted project.
Will it work for your site?
Dimensions are launch-verified: 75 in height, 48 in width, 48 in length, with a 48.0 x 48.0 in footprint you can lay out against your pad before it arrives. Filled with water, this tank carries roughly 4,587 lb. Spread across the 48 x 48 in (16 sq ft) footprint, that is about 287 lb per square foot the pad has to carry - size the base for the flooded weight, not the empty tank. A level, continuously supported pad is what keeps an above-ground poly tank from stressing at the bottom knuckle over time. Our Tank Sizing Calculator and Tank Sizing Guide help you confirm the volume and layout for water storage, rainwater capture, fire-water reserve, or reuse duty, and the concrete pad sizing guide walks through the ACI framework for that 287 lb/sq ft design load.
Getting the pad and plumbing right
The common mistake on a tank this tall-and-narrow is treating it like a squat tank: at 75 inches of head, the hydrostatic pressure at the base is real, so the pad has to stay dead level and the tank fully supported around its whole footprint. Fitting and outlet locations are per the technical drawing on this page - confirm bulkhead fitting and gasket sizing against it before you order plumbing, since port configuration drives your inlet and draw line. If this is a fire-water reserve, the NFPA 22 reservoir design guide covers sizing discipline and cold-climate freeze protection, and the water reuse topology guide covers grey-water, rainwater, and condensate aggregation trains.
This tank ships LTL freight, quoted live to your ZIP - get a rate on the Freight Cost Estimator or call 866-418-1777 and we will line out delivery for your 550 gallon vertical water storage tank.
