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TOTO Aquia® IV One-Piece Elongated Dual Flush 1.0 and 0.8 GPF WASHLET®+ and Auto Flush Ready Toilet with CEFIONTECT®, Cotton White

SKU: CST646CUMFGAT40#01

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TOTO CST646CUMFGAT40#01

The TOTO T40 Aquia IV 1G Two-Piece Elongated Dual Flush 1.0 and 0.8 GPF Universal Height WASHLET and Auto Flush Ready Toilet with CEFIONTECT is the epitome of modern form and function. The skirted design conceals the trapway, which enhances the elegant look of the toilet and adds an additional level of sophistication. The one-piece design is not only aesthetically pleasing, but also offers the benefit of being easier to clean versus a two-piece toilet. By removing the gap between the tank and bowl, we eliminate the hiding place for dirt and debris. An additional benefit of the one-piece toilet is that there is no threat of leaks from bolts or gaskets that can occur in two-piece toilets. The Aquia IV features TOTO’s DYNAMAX TORNADO FLUSH, utilizing a 360 degree cleaning power to reach every part of the bowl. This version of the Aquia IV includes CEFIONTECT, a layer of exceptionally smooth glaze that prevents particles from adhering to the ceramic. This feature, coupled with DYNAMAX TORNADO FLUSH, helps to reduce the frequency of toilet cleanings, minimizing the usage of water, harsh chemicals, and time required for cleaning. The enhanced design of the Aquia IV inner bowl reduces water flow resistance and turbulence, resulting in a quieter flush. The chrome center-mounted push button that sits atop the tank allows you to proactively conserve water by choosing between a 0.8 GPF rinse or 1.0 GPF for tougher jobs. This version of the Aquia IV offers TOTO T40 WASHLET and Auto Flush compatibility for when you are ready to upgrade. WASHLET toilets feature a channel on the bowl surface to help conceal your WASHLET supply line and power cord for seamless integration. The Universal Height design allows for a more comfortable seat position across a wide range of users. The TOTO Aquia IV meets the standards for EPA WaterSense, and California’s CEC and CALGreen requirements. The Aquia IV comes ready for install into a 12'' rough-in, but may be adapted for a 10'' or 14'' rough-in with the purchase of a separately sold adapter. Does not include seat or WASHLET. Additional items needed for installation and use must be purchased separately: compatible WASHLET or seat, wax ring, toilet mounting bolts, and water supply lines.


  • Finish Cotton
  • Collection Aquia
  • UPC 739268363076
  • Online Product ID 5526514
  • Length 28.25"
  • Width 15.1875"
  • Height 28.125"
  • Made In USA
  • Oversized yes
  • Made in USA yes
  • Watersense yes
  • Flow Rate (GPM) 0.8 gal/min
  • Material Vitreous China
  • Warranty Manufacturer One Year Limited
  • Shape Elongated
  • Trapway Skirted
  • Prop65 Warning This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects, and other reproductive harm. For more information go to www.P65Warnings.ca.gov.
  • Shipping L:32"x W:20"x H:28.75" 117 lbs.

Additional information

  • DYNAMAX TORNADO FLUSH utilizes 360 degree cleaning power to reach every part of the bowl
  • Highly efficient dual flush system promotes water conservation
  • CEFIONTECT ceramic glaze prevents debris and mold from adhering to ceramic surfaces
  • Bowl design reduces water flow resistance and turbulence, resulting in a quieter flush
  • Completely skirted design for a sleek and understated look
  • Elongated one-piece toilet, easier to maintain versus a two-piece toilet
  • TOTO WASHLET+ upgrade compatibility: designed to work with a T40 WASHLET+ bidet seat for seamless integration
  • Lid-top chrome dual flush push button - Select 1.0 or 0.8 GPF
  • Universal Height allows for more comfort across a broader range of individuals
  • WaterSense®, CALGreen, and CEC compliant
  • Does not include toilet seat or WASHLET
  • 12'' Rough-in
  • May be adapted for 10'' or 14'' rough-in with optional TOTO parts: TSU08W.10 or TSU08W.14 (sold separately)
  • Included parts: tank to bowl gasket, tank to bowl hardware, and toilet bolt caps
  • Purchase Separately: Wax ring, toilet mounting bolts, water supply lines, T40 WASHLET+ bidet seat or compatible toilet seat SS124 or SS234, and optional Auto Flush kit

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