TOTO
TOTO Aquia IV WASHLET+ One-Piece Dual Flush 1.28 and 0.9 GPF Universal Height Toilet MS646124CEMFGN
TOTO Aquia IV WASHLET+ One-Piece Dual Flush 1.28 and 0.9 GPF Universal Height Toilet MS646124CEMFGN
Model: MS646124CEMFGN#01
- Regular price
- Price: $976.00
- Regular price
- List Price: $1,458.00
- Sale price
- Price: $976.00
- Unit price
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10 in stock
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PRODUCT DESCRIPTION
NOTE: This item may only be purchased in combination with a Bidet Toilet Seat from this store. Please feel free to contact us with any questions.
The Aquia IV One-Piece Elongated Dual Flush 1.28 and 0.9 GPF Universal Height WASHLET®+ Ready Toilet 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. The DYNAMAX TORNADO FLUSH helps to reduce the frequency of toilet cleanings, minimizing the usage of water, harsh chemicals, and time required for cleaning and 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 0.9 GPF rinse or 1.28 GPF for tougher jobs. This version of the Aquia IV offers TOTO T40 WASHLET+ 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 newly redesigned lid style resides flush with the toilet bowl, providing a streamline look and giving the impression of an integrated system. The minimalistic display provides a more subdued appearance to your WASHLET. Skirted Design toilets also minimize the need to reach behind the bowl to clean the nooks and crannies of the exterior trapway.
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.
Includes a SoftClose® toilet seat (#SS124). Additional items needed for installation and use must be purchased separately: wax ring, toilet mounting bolts, and water supply lines.
FEATURES:
- DYNAMAX TORNADO FLUSH utilizes 360 degree cleaning power to reach every part of the bowl
- Highly efficient dual flush system promotes water conservation
- 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 1.28 or 0.9 GPF
- Universal Height allows for more comfort across a broader range of individuals
- WaterSense®, CALGreen, and CEC compliant
- SoftClose seat included- No more slammed lids
- 12" Rough-in
- May be adapted for 10" or 14" rough-in with optional TOTO parts: TSU48.10 or TSU48.14 (sold separately)
- Included parts: TOTO SS124 SoftClose seat, tank to bowl gasket, tank to bowl hardware, and toilet bolt caps: Purchased separately: wax ring, toilet mounting bolts, and water supply lines
Warranty: Because we are a TOTO Authorized Dealer, you are entitled to their standard 1 Year Limited Warranty.
There are plenty of resources to help you pick the right bidet, install it and maintain it for years to come. Remember, you can always reach out to us with any questions.

Excellent communication, follow-through, and speedy delivery. Owner was incredibly helpful with locating correct model. Fair pricing. I’d shop here again!
Questions & Answers
Have a Question?
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Does this product “TOTO WASHLET+ Aquia IV One-Piece” have a bidet already as the name implies?
No. This model does not come with a bidet seat but you can match any of the bidet seats we carry and they will fit this toilet. You can also go to the "All Products Page" and use the left filter to see the Aquia IV models that include Bidet Seats. Your welcome to call us to help you decide the models that work best for what you're looking for.
Let customers speak for us
from 124 reviewsFrom beginning to end everything Everflow did was great. Excellent customer service, great advice, prompt follow up, and super fast delivery. 10/10.
Company make extra efforts to help me find a brand and model that fit my needs. Thank you!
Excellent service
I was amazed when Neil was SO incredibly helpful in purchasing the right model for our home. We made the purchase and in less than a week (we live in a very rural area) our toilet was here. I would recommend EverFlow to anyone!
The toilet/bidet is great. It does everything it's says it does and installation was fairly easy although I did watch a YouTube video by Toto to speed up the process. The real star of the show is the customer service. I spoke with the owner of the company personally and he was gracious enough to answer ever one of my questions. He was a pleasure to do business with and is definitely the person I will buy any additional toilets and/or bidets that I will need in the future. Product score A+... customer service score A++. I would highly recommend purchasing from this company.
The staff at EverFlow were incredibly helpful coordinating my order and helping with my questions. Cannot recommend them highly enough. Excellent communication, excellent products, and timely service.
Wonderful Toto Toilet! Wonderful Features! Very Happy with Purchase! THANK YOU!
Neal - the owner of Everflow Bidets is a throwback to the good old days of excellent customer service and trying to do right by your customers. I have had to make changes to my orders, and eventually had to return a couple of bidets because I changed my mind, and get a different model and size. Throughout the process, Neal was very patient, respectful, and tried to help me get the right products I need at a fair price. I love Toto products, and Neal and Everflow appear to have Japanese souls - rooted in respect and care for their customers. Strongly recommend them.
Very personal and professional customer service. Fast shipping
Working with Everclow was a breeze. The product arrived in perfect condition and spot on time. Product was exactly as described I would definitely order from Everflow again
“Excellent company with great customer service! Very polite, responsive, and professional. The whole process was smooth, and I’m very happy with their products. Highly recommend!”
The S5 is a great product that is very feature rich. It hits all the major features and functions for a bidet as well as including various extras such as the night light function. Overall, I would highly recommend the S5 to anyone looking for a bidet.
I was looking for a bidet seat for a round toilet. The owner of the company helped me find the perfect bidet seat and it was delivered just a few days later. The service was outstanding!
… this one’ll win your heart. I look forward to the pleasure of using it. Shoppers: dokeep in mind that you must install a GFI plug adjacent to this product unless one is already present
Arrived quickly, easy to install