The Chem-Tainer 300 Gallon Vertical Liquid Storage Tank (SKU TC4560IC) is a 1.5 specific-gravity polyethylene vertical tank built for general liquid storage where you need a compact footprint and serious capacity. Built by Chem-Tainer, a long-running US rotational-molder of polyethylene storage tanks, it stands 60 inches tall on a 45 by 45 inch base, holds 300 gallons, and is rated to a 1.5 specific gravity - meaning it is engineered to carry liquids up to 50 percent heavier than water without exceeding its design limits. If you have been searching for a 300 gallon vertical storage tank that takes up minimal floor space while still giving you real volume, this is the size and shape that does it.
Will this 300 gallon vertical tank work for my job?
Filled with water, this tank carries 2,502 pounds. At its full 1.5 specific-gravity rating, the contents alone can reach 3,753 pounds, so the pad, stand, or slab underneath it has to be sized for that loaded weight - not the empty shell. The 45 by 45 inch footprint concentrates that load, so a level, continuously supported concrete pad is the right foundation. The vertical geometry keeps the tank inside a tight floor area, which is why this profile suits indoor utility rooms, pump houses, equipment yards, and any spot where horizontal tanks would eat too much room. For water service plan around the ~2,502 lb loaded figure for offloading, forklift, and rigging, and reserve the 3,753 lb number for foundation design at the full 1.5 SG rating. For dimensions and fitting placement, see the technical drawing on this page before you plumb anything in.
Not sure 300 gallons is the right volume for your usage and refill cycle? Run the numbers with our Tank Sizing Calculator, or work through the logic in the Tank Sizing Guide so you buy the capacity your application actually needs. For private fire-protection and rural static-water reservoir duty, our Fire-Water Reservoir Tank Design guide covers NFPA-22 sizing discipline and cold-climate freeze protection.
The mistake to avoid: respect the 1.5 SG rating
The number that catches buyers off guard is specific gravity. This tank carries a 1.5 SG rating, which covers most water-based liquids and many heavier solutions, but it is not unlimited. If your liquid is denser than 1.5 times water, this tank is the wrong choice and you need a higher-SG-rated vessel. Confirm the specific gravity of your actual liquid against the 1.5 rating before ordering - sizing the foundation and the tank to the loaded weight is the difference between a tank that lasts and one that fails early. If you are weighing brands at larger sizes, our Snyder vs Norwesco vs Chem-Tainer vertical tank comparison walks through how these builders stack up.
Freight and ordering
This 300 gallon vertical tank ships LTL freight from Marked Tree, Arkansas, the stocking plant for this model, and freight is quoted live to your ZIP code - not bundled into the listed price. Because it ships from a single plant in Marked Tree, freight tends to be lowest to the South and Central US and rises toward the coasts, so run your ZIP before you commit. Get an exact number in seconds with our Freight Cost Estimator, or call us at 866-418-1777 and we will quote it for you and confirm the right configuration for your install. Want a deeper spec walkthrough of this exact size? See our 300 gallon vertical liquid storage tank buyer's guide.
