Toto Aquia IV Toilet Two-Piece...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$649.29
Toto Aquia IV Toilet Two-Piece Toilets

Toto Aquia IV Toilet Two-Piece Toilets

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Model: CST446CEMFGN#01
From the Aquia IV Collection
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$649.29
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The TOTO Aquia IV Two-Piece Elongated Dual Flush 1.28 and 0.9 GPF 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. Skirted design toilets also minimize the need to reach behind the bowl to clean the nooks and crannies of the exterior trapway. 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 ceramic glaze that minimizes waste from sticking to ceramic surfaces. This feature, coupled with DYNAMAX TORNADO FLUSH, assists 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 0.9 GPF rinse or 1.28 GPF for tougher jobs. 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. The Aquia IV bowl and tank set includes tank to bowl hardware, a tank to bowl gasket, outlet socket, and toilet bolt caps. Additional items needed for installation and use must be purchased separately: seat, 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.
  • CEFIONTECT ceramic glaze minimizes waste 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.
  • Lid-top chrome dual flush push button - Select 1.28 or 0.9 GPF.
  • Universal Height creates greater comfort across a broader range of individuals.
  • 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: tank to bowl gasket, tank to bowl hardware, and toilet bolt caps.
  • Purchased separately: seat, wax ring, toilet mounting bolts, and water supply lines.
  • WASHLET® adapter 9AU321-A required if installing a TOTO WASHLET®.
Model Number Height Weight Rim HeightRim Height
CST446CEMGN#01 29.125 81 14.9375
CST446CEMFGN#01 30.25 112 16.125

Product Specs

ADA Compliant:
No
CALGreen:
Yes
CEC:
Yes
Component Part 1:
CT446CEFGN#01
Component Part 2:
ST446EMNA#01
Flush Valve Size:
2.5
Flush lever Location:
Center
Rim Height:
16.125
Rough-In:
12
Trapway Diameter:
2.5
WaterSense:
Yes
Collection:
Aquia IV
Product Type:
Two-Piece Toilets
Product Group:
Washroom/Bath
Product Subgroup:
Toilet
Product Length:
27.5625
Gallons Per Flush (GPF):
1.28|0.9
Installation Category:
Floor Mount/Floor Outlet
Product Shape:
Elongated
Product Height:
30.25
Product Category:
Two-Piece Toilets
Product Weight:
112
Product Width:
15.5
Department:
Plumbing

TOTO CST446CEMFGN#01 – Frequently Asked Questions

1) Will the TOTO Aquia IV two-piece toilet work with a 10 inch or 14 inch rough-in?
The Aquia IV ships set up for a standard 12 inch rough-in. It can be moved to a 10 inch or 14 inch rough-in, but only with a TOTO adapter bought separately: TSU48.10 for the 10 inch, TSU48.14 for the 14 inch. If you are replacing an older toilet in a pre-1960s building, measure from the finished wall to the center of the closet flange bolts before ordering.
2) What is the difference between the Aquia IV CST446CEMGN#01 and CST446CEMFGN#01?
Height is the difference. The CST446CEMGN#01 stands 29-1/8 inches overall with a 14-15/16 inch rim height. The CST446CEMFGN#01 is the taller comfort-height build at 30-1/4 inches overall with a 16-1/8 inch rim, and it is the one sold as the ADA-compliant option. Both are Cotton White, both are elongated skirted dual-flush bowls.
3) Does the Aquia IV meet ADA height requirements for a commercial or multi-family restroom?
Only one of the two builds does. The CST446CEMFGN#01, with a 16-1/8 inch rim height, is the ADA-compliant version. The shorter CST446CEMGN#01 at a 14-15/16 inch rim is not. If you are speccing for a public or common-area restroom that has to meet ADA seat height, order the FGN model and remember the seat is purchased separately, so the seat thickness factors into your final seat height.
4) What do I still need to buy to install an Aquia IV toilet?
The bowl and tank set comes with the tank-to-bowl hardware, tank-to-bowl gasket, outlet socket, and toilet bolt caps. You supply the seat, wax ring, closet mounting bolts, and the water supply line. For a multi-unit job, order those four items per fixture up front so your plumber isn't stopping mid-install.
5) Can I put a TOTO WASHLET on the Aquia IV?
Yes, but the skirted design means you need the WASHLET adapter 9AU321-A to mount it. That adapter is a separate purchase from the toilet.
6) How much water does the Aquia IV use per flush, and does it qualify for water rebates?
It's a dual flush: 0.9 GPF on the light rinse and 1.28 GPF for solids, selected with a chrome push button centered on the tank lid. It carries EPA WaterSense certification and meets California's CEC and CALGreen requirements, which is what most water-conservation rebate and Title 24 spec sheets ask for.
7) How big is the Aquia IV trapway, and will it handle heavy use?
The trapway measures 2-1/2 inches in diameter and the flush valve is also 2-1/2 inches, which is the large-valve size TOTO uses to move a fast volume of water into the bowl on a 1.28 gallon flush. Paired with the CEFIONTECT glaze that keeps waste from sticking, that's the combination behind the reduced cleaning frequency on high-traffic restrooms.
8) How much space do I need for the Aquia IV, and how heavy is it to set?
Footprint is 27-9/16 inches front to back and 15-1/2 inches wide, with an overall height of 30-1/4 inches on the taller build. Shipping weight on that model is 112 lb; the shorter 29-1/8 inch version is 81 lb. Plan on a two-person set for either one, and confirm your stall or alcove clears the 27-9/16 inch projection plus door swing.
9) Is the Aquia IV a floor-mount toilet or does it need in-wall carrier?
Floor mount with a floor outlet, so it sets on a standard closet flange with a wax ring and bolts. No in-wall carrier and no wall rough-in required. The skirt conceals the trapway but the waste still drops straight down through the floor.
10) Will a round-front toilet seat fit the Aquia IV?
No. The Aquia IV bowl is elongated, so you need an elongated seat. A round seat will leave the front of the bowl uncovered and won't line up at the hinge posts.
11) If I need to order just the tank or just the bowl for an Aquia IV, what are the part numbers?
The set breaks down into two components: bowl CT446CEFGN#01 and tank ST446EMNA#01. Useful if a tank cracks or a lid breaks on an installed fixture and you don't want to replace the whole unit.
How fast can I get the TOTO CST446CEMFGN#01 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. 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 CST446CEMFGN#01 come with a warranty?
Absolutely. The TOTO CST446CEMFGN#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 CST446CEMFGN#01?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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