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TOTO Ultramax One-Piece Round Toilet - White toilet on a white background

TOTO Ultramax One-Piece Round Toilet - 1.28 GPF

by TOTO
SKU MS603113CEFG#01
UPC/GTIN: 739268482654
$523.00
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TOTO Ultramax One-Piece

  • Tornado Flush: Centrifugal, cyclonic rinsing action utilizes two powerful nozzles to clear the bowl efficiently at 1.28 GPF
  • CEFIONTECT Glaze: Smooth ceramic finish minimizes surface friction to keep waste from adhering and simplify maintenance
  • SoftClose Seat: Premium round front seat lowers itself silently without slamming (SS113 model included)
  • Universal Height: Posture-friendly seating height mimics a standard chair to provide comfort for users of all mobilities
  • One-Piece Design: Seamless single-unit construction eliminates the gap between tank and bowl for easier external wipe-downs
  • WASHLET+ Compatible: Engineered with integrated internal pathways to seamlessly accommodate a water-wash bidet upgrade with hidden lines
TOTO Ultramax One-Piece Round Toilet - 1.28 GPF - White toilet on a white background
TOTO Ultramax One-Piece Round Toilet - 1.28 GPF - Sedona beige toilet on a white background

Advanced Surface Protection

The CEFIONTECT glaze creates an extraordinarily smooth ceramic surface that helps keep the bowl cleaner longer. By preventing debris and mold from adhering to the porcelain, it ensures that standard routine cleaning requires much less time and effort. A common feature in Toto One Piece Toilets.

TOTO Ultramax One-Piece Round Toilet - 1.28 GPF - top view

Cyclonic Bowl Rinsing

The TORNADO FLUSH system utilizes two powerful nozzles to create a centrifugal, cyclonic rinsing action with a 1.28 GPF volume. It delivers a strong and efficient clean with every flush, sweeping away waste while using less water. Found in many Toto Ultramax models.

TOTO Ultramax One-Piece Round Toilet - 1.28 GPF - front

Seamless Single-Unit Body

The one-piece configuration integrates the water tank and lower bowl into a single, continuous ceramic unit. This removes the separate tank-to-bowl connection gap found on traditional setups, eliminating a common hiding spot for dirt and making external wipe-downs much faster.

TOTO Ultramax One-Piece Round Toilet - 1.28 GPF - Black toilet on a white background

Space-Optimized Comfort

The combination of an accessible Universal Height and a compact round bowl makes this model highly versatile. It meets ADA accessibility standards while offering an ideal fit for smaller powder rooms or tight bathroom layouts where maximizing floor space is essential.

TOTO Ultramax One-Piece Toilet 

The TOTO Ultramax One-Piece is a trusted classic updated to meet modern expectations for comfort, cleanliness, and performance. It features a decorative high-profile tank with a substantial, furniture-like presence, paired with a compact round front bowl that optimizes space in smaller bathrooms. Equipped with a high-efficiency 1.28 GPF TORNADO FLUSH® system and a smooth CEFIONTECT® ceramic glaze, it ensures consistent rinsing results while maintaining a premium everyday bathroom experience.

Perfect for those looking for a high-performance, low-maintenance toilet with a space-saving round profile.

TOTO Ultramax Specifications and Features

  • CEFIONTECT® ceramic glaze prevents debris and mold from sticking to ceramic surfaces
  • High-efficiency TORNADO FLUSH® system for powerful and reliable rinsing
  • Fully glazed trapway for smooth waste flow
  • Round front bowl with included SoftClose® seat (SS113)
  • Chrome plated trip lever included (with optional upgrade finishes available)
  • Comfortable universal height
  • ADA compliant
  • 12" rough-in installation

TOTO Ultramax One-Piece Compatibility

The TOTO Ultramax is a round front one-piece toilet. Confirm these four things before ordering.

  • Rough-in measurement: Standard 12-inch rough-in configuration.
  • Floor space: Round bowl requires less depth from the wall to the front of the bowl compared to elongated designs, saving valuable floor space. Confirm at least 15 inches of side clearance from the bowl centerline.
  • Water supply location: Your incoming water line should connect to the left or right side of the base. Standard ½-inch shutoff valves work with this toilet.
  • Drain configuration: This toilet has a floor drain only. Wall drains are not compatible; the drain must exit the floor at your 12-inch rough-in point.

For reference: One-piece toilets are heavier than two-piece models (approximately 75 lbs); plan for two people during installation.

Installation steps

  1. Turn off the water supply and flush the existing toilet to empty the tank and bowl.
  2. Disconnect the water supply line and remove the old toilet by unbolting it from the floor.
  3. Clean the floor around the drain opening and remove the old wax ring or seal.
  4. Install a new wax ring (or rubber seal) on the floor drain opening, centered on the drain.
  5. Lower the new toilet onto the wax ring, aligning the bolts with the floor holes, and tighten bolts hand-tight then with a wrench.
  6. Reconnect the water supply line, turn on the water, and fill the tank to test for leaks around the base and connection points.
  7. Install the included SoftClose seat onto the bowl mounting holes and adjust as needed.

TOTO Ultramax One-Piece Downloads

TOTO Ultramax One-Piece Installation Manual

TOTO Ultramax One-Piece Spec Sheet

Frequently Asked Questions

  • Yes! The Toto UltraMax is a good toilet. It flushes powerfully, uses less water, and has a smooth design that’s easy to clean.


  • A round front bowl is shorter from back to front, extending less into the bathroom than an elongated model. This makes it an excellent choice for compact bathrooms, powder rooms, or layouts where door clearance and floor space are limited.

  • Yes. The TOTO UltraMax features the TORNADO FLUSH® system, which uses two powerful nozzles to create a swirling, cyclonic whirlpool that cleans the entire bowl efficiently.


  • The TOTO Ultramax is a one-piece toilet known for its powerful flush, smooth design, and easy cleaning. It’s a popular choice for everyday use.


  • The benefits of Ultramax are its strong flushing, easy-to-clean one-piece design, and reliable performance. It’s simple, durable, and low maintenance.