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Kohler K-4519 3.5 Gallon Per Flush Wellworth Toilet Tank

Here is the Kohler K-4519 toilet tank that was produced for over 10 years and became one of the most popular toilet tanks in the world. For over 10 years the Wellworth ‘Water Guard’ flushed using 3.5 gallons of water. In 1995 the National Energy Policy Act H.R. 776 went into effect that put us on the course of ‘Flushing on Nothing’ – our series of how we will flush our toilets with no water and how we are regulating the gallons per flush (gpf) from 3.5 gpf to 1.6 gpf. The K-4519 tanks were assembled with Kohler K-4261 Northline bowls, K-4221 Wellworth elongated bows and K-4202 Wellworth round-front bowls. As you can see from the picture below, the K-4519 size and shape look identical to its predecessor the K-4519-C. Follow our ‘Toilet Evolution’ getting to ‘Flushing on Nothing’ as we update and show flushing on 7 gallons per flush to 1.1 gallons per flush.

We currently have a limited selection of Kohler K-4519 and K-4519-C Wellworth tanks in stock. See all our Available Kohler K-4519 and K-4519-C Tanks at Faucets + Fixtures Overstock.

If you have any questions on Kohler ‘Lite’ flushing products or any other Kohler product Contact us.


1 comment to Kohler K-4519 3.5 Gallon Per Flush Wellworth Toilet Tank

  • Alex Lewis

    I am seeking two 3.5g per flush toilets. I would like to match the existing bathroom colors. They are Koehler, a beige option. However, any color would be considered. If you have these items or have an idea where I might obtain them, please let me know. Thanks,

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