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Durable Toto St446emna#01 Aquia Iv Dual Flush Toilet Tank Only With Washlet+ Auto Flush Compatibility, Cotton White - Final Sale [hGm3nyBH]

$39.99 $127.99 -69%

The TOTO Aquia IV Dual Flush 1.28 and 0.9 GPF Auto Flush Compatible Toilet Tank is designed for use with the Aquia IV dual flush bowl. The Aquia IV tank includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps. The Aquia IV tank fe

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Durable Toto St446emna#01 Aquia Iv Dual Flush Toilet Tank Only With Washlet+ Auto Flush Compatibility, Cotton White - Final Sale [hGm3nyBH]

The TOTO Aquia IV Dual Flush 1.28 and 0.9 GPF Auto Flush Compatible Toilet Tank is designed for use with the Aquia IV dual flush bowl. The Aquia IV tank includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps. The Aquia IV tank features TOTO's Dual-Max dual flush option, allowing you to proactively conserve water usage.

The chrome center-mounted push button that sits atop the tank allows you to choose between a 0.9 GPF rinse or 1.28 GPF for tougher jobs. This version of the Aquia tank offers TOTO T40 WASHLET+ and Auto Flush compatibility for when you are ready to upgrade to a hands-free flush system with electronic bidet seat. The Aquia IV tank meets the standards for EPA WaterSense, and California's CEC and CALGreen requirements.

Additional items needed for installation and use must be purchased separately: toilet bowl, wax ring, toilet mounting bolts, and water supply lines.

TOTO ST446EMNA#01 Aquia IV Toilet Tank Only Features

  • Aquia IV toilet tank for use with Aquia IV toilet bowl
  • Dual flush system allows you to proactively conserve water - Select 1.28 GPF or 0.9 GPF
  • Lid-top chrome dual flush push button
  • Auto Flush compatible
  • WaterSense, CALGreen, and CEC compliant
  • Included parts: tank to bowl gasket, tank to bowl hardware, and toilet bolt caps
  • Purchased separately: Aquia IV bowl, wax ring, toilet mounting bolts, water supply lines, and optional WASHLET+ with Auto Flush kit

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TOTO ST446EMNA#01 Aquia IV Toilet Tank Only Specifications

  • Length (in.): 6.375
  • Width (in.): 15.5625
  • Height (in.): 13.125
  • Weight (lb): 29
  • WaterSense Certified: Yes
  • Water Consumption (GPF): 0.9/1.28
  • Flush Lever Location: Center
  • Material: Vitreous China
  • Warranty: Manufacturer One Year Limited
  • Collection: Aquia
  • Category: Tanks
  • Finish: Cotton White
  • UPC Code: 739268425729

TOTO ST446EMNA#01 Aquia IV Toilet Tank Only Documentation

*This product is in TOTO's "cotton white" color – which is your regular clean white that will match other white bathroom fixtures.

What Our Customers Say

January 20, 2026

Absolutely no complaints!

Five stars! The design is sleek and the functionality is flawless.

- William J..

January 20, 2026

Absolutely no complaints!

I bought this based on reviews and I'm so glad I did.

- Eva T..

January 20, 2026

Absolutely no complaints!

The design is sleek, and the operation is smoother.

- Monroe G..

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