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TOTO WT173MA DUOFIT In-Wall Dual Flush 1.28 and 0.9 GPF Tank System with WASHLET+ Auto Flush Ready Copper Supply Line
Model: TOTO-WT173MA
The TOTO DuoFit In-Wall Tank with Auto Flush Ready Dual-Flush System with Copper Supply takes up less floor space, giving your bathroom a more open feel and making it easier to clean. This modern...
TOTO
$959.79
The TOTO Drake 1.28 GPF Toilet Tank with WASHLET+ Auto Flush Compatibility is designed for use with compatible Drake bowls. Compatible Drake bowls feature TOTO's TORNADO FLUSH, a rimless, hole-free design with dual-nozzles that creates a centrifugal washing action that assists in rinsing the bowl more efficiently. This version of the tank comes equipped with a left-hand chrome trip lever. This Drake tank meets the standards for EPA WaterSense, and California's CEC and CALGreen requirements. The Drake tank includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps. Additional items needed for installation and use must be purchased separately: compatible Drake toilet bowl, wax ring, toilet mounting bolts, water supply lines, and toilet seat.
Features
- POWERFUL PERFORMANCE - A powerful flush with only 1.28 GPF. WaterSense, CALGreen, and CEC compliant. Wide 3 inch flush valve to quickly move water through the Drake TORNADO FLUSH system.
- STYLISH AND MODERN DESIGN - Update your oasis with this stylish design that couples well with any bathroom décor. The Drake tank features a chrome plated left-hand trip lever.
- COMPLETE YOUR TOILET - Drake tank only. Compatible Drake bowl required. Wax ring, flange bolts, and water supply lines not included. Finish your purchase with the addition of a SoftClose seat or WASHLET bidet seat.
- AUTO FLUSH COMPATIBILTY FOR WHEN YOU ARE READY TO UPGRADE - This tank features an auto flush technology option when paired with the correct WASHLET+ bidet seat.
Manufacturer Resources
Parts Manual
Product Specs
- Product Group:
- Washroom/Bath
- Product Subgroup:
- Toilet Tank
- CALGreen:
- Yes
- CEC:
- Yes
- Flush Valve Size:
- 3
- Flush lever Location:
- Left
- Product Type:
- Tanks
- Trapway Diameter:
- 2.125
- WaterSense:
- Yes
- Collection:
- Drake
- Product Length:
- 7.375
- Gallons Per Flush (GPF):
- 1.28
- Product Height:
- 14
- Product Material:
- Vitreous China
- Product Category:
- Tanks
- Product Weight:
- 32
- Product Width:
- 17.1875
- Department:
- Plumbing
TOTO ST776EA#11 – Frequently Asked Questions
1) Does the TOTO ST776EA Drake tank come with a bowl, or do I need to buy that separately?
Tank only. The ST776EA is the Drake tank casting and trim, and it needs a compatible Drake bowl bought separately. What ships with it is the tank to bowl gasket, the tank to bowl hardware, and the toilet bolt caps. What you still need to complete the install: the Drake bowl, a wax ring, floor flange mounting bolts, a water supply line, and a seat. Worth knowing on a multi-unit job, because the tank alone is a legitimate repair part when a bowl survives and a tank cracks.
2) Which side is the flush handle on the TOTO ST776EA Drake tank?
Left-hand, and it is a chrome plated trip lever. That matters if you are matching a row of existing fixtures or if the toilet sits in a corner where a right-hand lever would land against a wall or vanity. There is no handing option on the ST776EA, so if the opening needs a right-hand lever you need a different Drake tank model, not a different finish of this one.
3) Will the ST776EA Drake tank work with a WASHLET+ bidet seat and auto flush?
Yes, that is the point of the EA in the model number. The Drake ST776EA is built with the auto flush option, which activates when it is paired with the correct WASHLET+ bidet seat. Without that seat it still operates as a standard manual flush tank off the left trip lever, so you can install it now and add the WASHLET+ later without swapping the tank.
4) Does the TOTO Drake ST776EA tank meet WaterSense and California water efficiency rules?
It does. The Drake ST776EA is a 1.28 GPF tank and it meets EPA WaterSense along with California CEC and CALGreen requirements. For anyone specifying into California work, or into a rebate program or a green building scorecard, those three are the boxes that normally have to be ticked, and the 1.28 gallon flush is what gets it there.
5) What colors does the TOTO Drake ST776EA tank come in, and how do I order the right one to match my bowl?
Five: Cotton White, Bone, Colonial White, Sedona Beige, and Ebony. TOTO color codes follow the model number, so you order ST776EA#01 for Cotton White, #03 Bone, #11 Colonial White, #12 Sedona Beige, and #51 Ebony. Match the suffix on the tank to the suffix on the Drake bowl. The codes are the same across the TOTO line, so if you are replacing a cracked tank on an existing Drake, read the code off the bowl and order the tank to match rather than guessing from the color name, since Cotton White and Colonial White are genuinely different whites.
6) Can I put the TOTO ST776EA tank on a non-Drake or another brand's toilet bowl?
No. The ST776EA is built to mate with compatible Drake bowls and nothing else. Tank to bowl bolt spacing, the gasket seat, and the flush valve outlet are all specific to that pairing, so a tank from one family will not seal correctly on another family's bowl even when it looks like it sits flat. If you are replacing a broken tank, identify the bowl model first and buy the tank that family calls for.
7) Is the TOTO Drake ST776EA tank vitreous china or plastic?
Vitreous china, the same glazed ceramic as the bowl. That is why it wipes clean and holds its color in a high-traffic restroom, and also why it takes a chip if a tool hits the rim during install. Handle it by the body, not the lid, and set the lid aside on a towel before you start bolting the tank down.
8) Where can I get the parts diagram for the TOTO ST776EA Drake tank?
TOTO publishes a parts manual for the ST776EA, hosted at https://zensupply.com/content/pdf/toto/tpkdtyfpwtfkkiee41k1.pdf. It is what you want in hand before ordering a replacement fill valve, flapper, or trip lever for a tank already in service, so you match the internal component instead of guessing from the model number alone.
How fast can I get the TOTO ST776EA#11 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the TOTO ST776EA#11 come with a warranty?
Absolutely. The TOTO ST776EA#11 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the TOTO ST776EA#11?
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