The Enduraplas 340 Gallon Green Vertical Storage Tank is a 340-gallon polyethylene vertical built for above-ground bulk water storage where you need real capacity in a compact 40-by-40-inch footprint. It stands 74 inches tall, is molded in green, and carries a 1.9 specific gravity rating - meaning the tank wall is engineered to hold contents up to 1.9 times the density of water. For straight water duty that rating is a generous safety margin, not a requirement, but it tells you the shell is heavily built.
Will it work for your site?
Full of plain water this tank carries about 2,836 pounds of liquid weight, and its wall is rated to a maximum contents weight of 5,388 pounds. Those numbers drive your decisions. First, the pad: 2,836 pounds resting on a 40-by-40-inch base concentrates real load, so set it on a level, continuously supported concrete pad - see our guide to concrete pad sizing for above-ground polyethylene tanks before you pour. Second, access: at 74 inches tall on a 40-inch base, plan ladder or platform access for the top fill and vent, and confirm overhead clearance at the install point. Third, sizing: if you are matching this 340-gallon tank to a demand schedule - daily draw, rainwater catchment, fire reserve - run the numbers first with our Tank Sizing Calculator and the Tank Sizing Guide so you buy the right volume once. This is a vertical storage tank in the truest sense: tall, narrow, and meant to be left in place.
The headroom in the 1.9 rating
The gap between full water weight (2,836 pounds) and the maximum rated contents weight (5,388 pounds) is the structural headroom built into the 1.9 specific gravity wall. That margin means the same shell is rated to carry contents up to 1.9 times the density of water - so if your program later shifts from plain water to a heavier liquid, the tank already has the wall rating to handle it. You buy once instead of re-specifying later. For straight water service today, treat it as durability you do not have to think about.
Common uses and the mistake to avoid
This vertical works for non-potable water reserve, rainwater harvesting, irrigation supply, and fire-water reservoir service on rural and remote sites. If fire protection is your purpose, size the reservoir to your standard before you commit to 340 gallons - our fire-water reservoir design guide walks the NFPA 22 sizing discipline and cold-climate freeze protection. For rainwater harvesting, the first-flush diverter sizing guide covers keeping the dirty first wash out of your stored water, and for grey-water and condensate reuse trains the industrial water reuse topology guide covers how to band storage by quality. The mistake to avoid: ordering before you confirm your fitting layout. Fitting size and placement are fixed when the tank is molded, so verify them against the technical drawing on this page and by phone before you order - moving a fitting after delivery is far harder than choosing the right configuration up front.
Freight
This tank ships LTL freight from the Enduraplas plant in Converse, TX, with the rate quoted live to your ZIP code. Because freight scales with distance from Converse, South-Central and Southwest buyers will typically see lower LTL cost than coastal destinations - the only way to know your number is to run it. Get an exact rate through our Freight Cost Estimator or call 866-418-1777 and we will quote it for you. Listed price is before freight. Have your delivery ZIP and any access notes - lift-gate, residential, limited-truck-access - ready and we will line up the right service.
