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TOTO ST776EA Drake 1.28 GPF Toilet Tank with WASHLET+ Auto Flush Compatibility
Model: TOTO-ST776EA
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...
TOTO
Starting at
$113.79
The TOTO Drake II 1G and Vespin II 1G, 1.0 GPF Auto Flush Compatible Toilet Tank is designed for use with the Drake II or Vespin II bowl. The Drake II 1G and Vespin II 1G features TOTO's industry leading 1G technology offering a powerful flush that flushes completely and fully with only one gallon of water. The TORNADO FLUSH system uses a hole-free rim 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 tank model offers hands-free, auto flush compatibility when used with the compataible T40 WASHLET+ Ready bowl and WASHLET electronic bidet seat. The Drake II 1G and Vespin II 1G meets the standards for EPA WaterSense, and California's CEC and CALGreen requirements. The Drake II 1G and Vespin II 1G 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: toilet bowl, wax ring, toilet mounting bolts, water supply lines, and toilet seat. The Drake II 1G and Vespin II 1G ST453UA tank is designed to be used with Drake II and Vespin II bowls only.
Features
- Drake II 1G and Vespin II 1G toilet tank for use with Drake II or Vespin II toilet bowl
- 1G flushing system, creates a powerful flush with only 1.0 GPF
- Auto Flush compataible when paired with compatible T40 WASHLET+
- Left-hand chrome trip lever
- WaterSense, CALGreen, and CEC compliant
- Included parts: tank to bowl gasket, tank to bowl hardware, and toilet bolt caps
- Purchased separately: bowl, wax ring, toilet mounting bolts, water supply lines, and optional WASHLET+ with Auto Flush kit
Manufacturer Resources
Product Specs
- Rough-In:
- 12
- Collection:
- Drake II
- Product Type:
- Tanks
- Product Group:
- Washroom/Bath
- Product Subgroup:
- Toilet Tank
- Product Length:
- 8
- Gallons Per Flush (GPF):
- 1
- Product Height:
- 13.875
- Product Category:
- Tanks
- Product Weight:
- 28
- Product Width:
- 16
- Department:
- Plumbing
TOTO ST453UA#01 – Frequently Asked Questions
1) Will this TOTO tank fit any Drake or Vespin toilet bowl?
No. The ST453UA tank is built for Drake II and Vespin II 1G bowls only. It will not mate correctly to an original Drake, a Drake II at a different flush rate, or any other TOTO bowl, because the tank-to-bowl gasket, bolt pattern, and the 1G flush valve are matched to that bowl. Confirm the bowl model before ordering a tank on its own.
2) Is the trip lever on the left or the right?
Both. The standard configuration is a left-hand chrome trip lever, and right-hand lever versions are also offered across every color. Pick the side that matches the adjacent openings or clears your vanity or wall return, since the lever side is fixed at the tank and isn't swapped in the field.
3) What comes in the box with the TOTO Drake II 1G tank, and what else do I need to buy?
The tank ships with the tank-to-bowl gasket, tank-to-bowl hardware, and toilet bolt caps. You still need the bowl, wax ring, toilet mounting (closet) bolts, water supply line, and a seat. If you want hands-free operation you also need the WASHLET+ with Auto Flush kit. Plan the parts list before the truck rolls, because none of those are in the tank carton.
4) Does the Drake II 1G tank meet WaterSense and California water efficiency rules?
Yes on all three. The Drake II 1G and Vespin II 1G meets EPA WaterSense, California CEC, and CALGreen requirements, which is what a spec on a California multi-family or institutional job usually calls out. It is also listed as ADA compliant.
5) Can I buy just the tank if the old one cracked, or do I have to replace the whole toilet?
Just the tank, as long as the bowl is a Drake II 1G or Vespin II 1G on a 12 inch rough-in. It ships with the gasket, tank-to-bowl bolts, and cap set needed to reseat it. Match the color and the lever side to the existing fixture, and note that the closet bolts holding the bowl to the floor and the supply line are not included if you plan to redo those at the same time.
6) Does this tank actually flush a bowl clean at only 1 gallon?
It uses TOTO's 1G system at 1.0 gallon per flush with TORNADO FLUSH, a hole-free rim with dual nozzles that spins water around the bowl instead of dribbling it down rim holes. That centrifugal action is what lets it clear and rinse on a single gallon rather than the usual 1.28 or 1.6.
7) Can I add automatic flushing to this TOTO tank later?
Yes, if the bowl underneath it is a T40 WASHLET+ Ready bowl. The tank is Auto Flush compatible when paired with that bowl and a WASHLET electronic bidet seat, so the flush is triggered by the seat rather than the lever. The Auto Flush kit and WASHLET are bought separately, and no battery is supplied with the tank.
8) What is CEFIONTECT on the TOTO tank and does it matter on the tank itself?
CEFIONTECT is TOTO's fired-on ceramic glaze that leaves a much smoother surface for dirt to sit on. Tanks are offered both with and without it, in every color. If the bowl you are matching is a CEFIONTECT model, order the CEFIONTECT tank so the sheen and shade line up across the two pieces.
9) What colors does the TOTO Drake II 1G tank come in to match an existing bowl?
Five: Cotton White, Colonial White, Bone, Sedona Beige, and Ebony. Cotton White and Colonial White are different shades, so match the code on the bowl rather than eyeballing it, especially when replacing a cracked tank on an otherwise good fixture.
10) How much does the TOTO Drake II tank weigh and how big is it for handling and storage?
28 pounds, measuring 16 x 13.875 x 8 inches (width, height, length as listed). That is a one-person carry but an awkward one, and it's worth knowing when you're staging a dozen replacements in a building or checking clearance behind a tight vanity wall.
How fast can I get the TOTO ST453UA#01 delivered?
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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 ST453UA#01 come with a warranty?
Absolutely. The TOTO ST453UA#01 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 ST453UA#01?
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