Toto Ultramax WASHLET+ Low Profile One-Piece Toilet - 1.28 GPF + S7A

TOTO

SKU: MW6184736CEFG#01

$2,623.00

$1,837.00

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Integrated Bidet Seat: WASHLET S7A

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TOTO Ultramax WASHLET+ S7A Low Profile

The TOTO Ultramax WASHLET+ S7A Low Profile is a Universal Height low-profile-tank one-piece that flushes once at 1.28 GPF on high-efficiency TORNADO FLUSH®, with the WASHLET+ S7A already fitted.

The S7A is the only WASHLET tier with a touchless auto open/close lid, which is what separates it from the otherwise closely matched S7.

Toilet Type: One-piece WASHLET+ toilet
Height: Universal Height — seat height 17-1/4" [437mm]
Bowl Shape: Elongated
Flush: High-efficiency TORNADO FLUSH® — single 1.28 GPF (4.8 LPF)
Rough-In: 12"
Included WASHLET: WASHLET+ S7A (SW4736AT40)
Trap Diameter: 2"
Auto Flush: Not included — TOTO lists no auto-flush kit for this model

High-efficiency TORNADO FLUSH®

TOTO's TORNADO FLUSH rinses the bowl on a single 1.28 GPF flush, which TOTO classes as high-efficiency.

CEFIONTECT® Ceramic Glaze

On the Ultramax sheets TOTO states that CEFIONTECT ceramic glaze prevents debris and mold from sticking to ceramic surfaces.

Decorative One-Piece Design

TOTO describes this as a decorative one-piece design with a low-profile tank, at Universal Height.

Adjustable Warm-Water Cleansing

The S7A cleanses front and rear with gentle aerated warm water, with oscillating and pulsating modes and independently adjustable position, temperature and pressure.

Heated Seat and Five-Setting Dryer

The seat is heated with its own temperature control, and the warm-air dryer offers five variable temperature settings.

Touchless Auto Open/Close Lid

The S7A is the only WASHLET tier with a touchless auto open/close lid, which is what separates it from the otherwise closely matched S7.

TOTO UltraMax + S7A Installation

Toto Ultramax WASHLET+ Low Profile One-Piece Toilet - 1.28 GPF + S7A Compatibility

The TOTO UltraMax WASHLET+ S7A is a one-piece elongated smart toilet with integrated bidet seat. Confirm these four things before ordering:

Rough-in measurement: 12-inch standard. 10-inch and 14-inch rough-ins are not available for this model.
Floor clearance: 21 inches in front of the bowl, 15 inches on each side.
Water supply: Standard ½-inch connection at the base of the toilet.
Electrical outlet: GFCI 120V within 3 feet (powers integrated WASHLET+ S7A bidet seat).

Installation steps

Prep. Shut off the water supply, flush to empty the tank, then disconnect the supply line.
Remove the old toilet. Unbolt from the floor and scrape the old wax ring from the flange.
Set the wax ring. Place a new wax ring on the flange, centered over the drain.
Seat the new toilet. Lower onto the flange, press down firmly, and hand-tighten the bolts evenly.
Connect and test. Reconnect the supply line, restore water, and plug into the GFCI outlet.

Need a Professional Installer near you?

If you need help finding a professional installer in your area, checkout Licensed TOTO Installers page to find one near you.

Toto Ultramax® WASHLET®+ Low Profile One-Piece Toilet - 1.28 GPF + S7A Downloads

Frequently Asked Questions about TOTO UltraMax + S7A

Does the UltraMax WASHLET+ S7A require an electrical outlet?

Yes. A nearby 120V GFCI-protected outlet is required to power the WASHLET's advanced features.

What rough-in size does this toilet require?

The UltraMax WASHLET+ S7A is designed for a standard 12-inch rough-in installation.

Does the toilet automatically flush after use?

Yes. The included S7A model features automatic flushing for a touch-free experience.

Can multiple users save their preferred settings?

Yes. The remote control allows users to save personalized cleansing and comfort settings.

Is the seat heated?

Yes. The WASHLET S7A includes a heated seat with adjustable temperature settings for year-round comfort.

High-efficiency TORNADO FLUSH® at 1.28 GPF

TOTO builds this Ultramax on its TORNADO FLUSH system, which the sheets describe as high-efficiency at 1.28 GPF.

This is a single-flush toilet: one volume, 1.28 GPF (4.8 LPF), with no reduced-flush setting to choose between.

The flush is operated by a chrome plated trip lever on the side of the tank, the trap measures 2" across, and the trap seal is 2-1/8".

High-efficiency TORNADO FLUSH system
Single 1.28 GPF (4.8 LPF) flush
Chrome plated trip lever flush control

CEFIONTECT® on a Decorative One-Piece Body

TOTO states on every Ultramax sheet that CEFIONTECT ceramic glaze prevents debris and mold from sticking to ceramic surfaces.

TOTO describes the body as a decorative one-piece design with a low-profile tank, and lists it at Universal Height.

Because it is one-piece there is no seam between tank and bowl to wipe along, and TOTO lists the whole unit as CST618CEFGAT40.

CEFIONTECT glazed elongated bowl
Decorative one-piece low-profile tank
Concealed WASHLET+ supply connection

Adjustable Warm-Water Cleansing with Heated Seat and Dryer

On this Low Profile Ultramax the S7A cleanses front and rear with gentle aerated warm water, with oscillating and pulsating features.

Spray position, water temperature and water pressure each adjust on their own, and the water range runs 86ºF–104ºF.

An instantaneous water heater supplies continuous warm water, the seat is heated across 82ºF–97ºF, and the warm air dryer offers five variable settings.

Front and rear aerated warm water
Oscillating and pulsating spray modes
Five-setting warm air dryer

EWATER+®, PREMIST® and the Touchless Auto Open/Close Lid

EWATER+ auto-cleans the wand and the bowl after every use, and PREMIST mists the bowl before every use.

The wand also cleans itself inside and out before and after every use.

The S7A is the only tier with a touchless auto open/close lid, driven by a multifunction pearl white remote control with personalized memory settings for up to 4 users. CLEAN RESIN keeps the wand and seat easier to maintain, and a night light illuminates the side and the inside of the bowl is fitted.

EWATER+ on the wand and bowl
PREMIST before every use
Touchless auto open/close lid

What do you get with the TOTO Ultramax WASHLET+ S7A Low Profile?

This is combination MW6184736CEFG: the one-piece Ultramax Low Profile with the CST618CEFGAT40 elongated CEFIONTECT unit and the SW4736AT40 WASHLET+ S7A, in Cotton.

It is listed at Universal Height with a seat height of 17-1/4" [437mm], flushes once at 1.28 GPF (4.8 LPF), and sets on a 12" rough-in.

TOTO lists no auto-flush kit for any Ultramax Low Profile model, including the S7 and S7A, and states ADA compliance for the trip-lever installation only.

Ultramax Low Profile Features

Feature	Details
TORNADO FLUSH®	High-efficiency TORNADO FLUSH system - 1.28 GPF (4.8 LPF).
Water Use	Single flush, 1.28 GPF (4.8 LPF).
CEFIONTECT®	Ceramic glaze prevents debris and mold from sticking to ceramic surfaces.
Design	Decorative one-piece design with low-profile tank.
Height	Universal Height.
Trap Diameter	2".
Trap Seal	2-1/8".
Rough-In	12".
WASHLET+ Concealed Connection	Concealed supply connection for seamless installation.
One-Piece Construction	Elongated front bowl and WASHLET+ set.
Flush Control	Chrome plated trip lever.
Electrical	Gfci outlet 12" from the floor.
Auto Flush	Not included — TOTO lists no auto-flush kit for this model.

WASHLET S7A Features

Feature	Details
Front and Rear Cleansing	Gentle aerated, warm water, front and rear spray with oscillating and pulsating features.
Adjustable Cleansing	Adjustable spray position, water temperature, and water pressure.
Instantaneous Water Heating	Instantaneous water heater for continuous warm water.
Warm Air Dryer	Five variable temperature settings, 95ºF–140ºF.
Heated Seat	Heated seat with temperature control, 82ºF–97ºF.
Automatic Deodorizer	Automatic air deodorizer.
EWATER+®	Auto-cleans the wand and bowl after every use.
PREMIST®	Automatically mists the bowl before each use.
Self-Cleaning Wand	Cleans itself inside and out before and after every use.
CLEAN RESIN®	Keeps wand and seat cleaner, more hygienic, and effortless to maintain.
Night Light	Illuminates the side and the inside of the bowl.
Controls	Multifunction pearl white remote control with personalized memory settings for up to 4 users.
User Memory	Personalized memory settings for up to 4 users.
Touchless Auto Open/Close Lid	Touchless auto open/close lid — S7A only.
Auto Energy Saver	Adjusts the seat temperature when inactive.

TOTO Ultramax WASHLET+ S7A Low Profile One-Piece Toilet - 1.28 GPF Specifications

Specification	Details
Series	Ultramax Low Profile
Toilet Construction	One-Piece
One-Piece Unit Model	CST618CEFGAT40
Tank Model	N/A — one-piece toilet
Bowl Shape	Elongated
Color	#01 Cotton
Height Classification	Universal Height
Seat Height	17-1/4" [437mm]
Combination Model	MW6184736CEFG
WASHLET Model	SW4736AT40 (WASHLET+ S7A)
TOTO Spec Sheet	SS-02410
Rough-In	12"
Trap Diameter	2"
Trap Seal	2-1/8"
Water Use	1.28 GPF (4.8 LPF)
Flush System	TORNADO FLUSH®
Flush Control	Chrome plated trip lever
Auto Flush	Not included — TOTO lists no auto-flush kit for this model
Electrical	GFCI outlet 12" from the floor
ADA Compliance	ADA compliant (when installed with trip lever located on the approach side)
Warranty	One Year Limited Warranty (combination)