Does it fit a standard 12-inch rough-in?

Yes. The Highline is designed for a standard 12-inch rough-in, the most common setup in US homes. Measure from the finished wall to the closet bolts before ordering to confirm.

Is it a direct replacement for the Kohler 3999-0?

Yes. Kohler lists it as a direct replacement for the 3999-0, so the footprint and connections match an existing install.

How much water does it use?

It flushes 1.28 gallons per flush. Kohler estimates savings of up to 16,500 gallons a year compared with a 3.5 gpf toilet.

Does the seat come with it?

Yes, a seat is included in the box along with the toilet. Check whether you want a quiet-close seat, since the included one is basic.

How does it compare with a one-piece toilet?

A one-piece has no tank seam and is usually quieter and easier to wipe down. The Highline is lighter, simpler to install and less expensive for the same flush technology.

Is the elongated bowl a problem in a small bathroom?

It projects a few inches further than a round-front bowl. Measure the space from the wall to the door swing before choosing elongated.

Where can I buy the Highline 1.28 gpf Two-Piece Elongated Toilet?

4 stores we checked sell it, including PDI Kitchen, Bath & Lighting, Lowe's, The Bold Look of Kohler, The Home Depot.

Kohler

Highline 1.28 gpf Two-Piece Elongated Toilet

Q: Where is the Highline 1.28 gpf Two-Piece Elongated Toilet cheapest?

At PDI Kitchen, Bath & Lighting, for $343.58, as of our latest check.

Best price now

$343.58at PDI Kitchen, Bath & LightingChecked 4 h ago

Compared across 4 stores. Prices are checked against each store and labelled with when.

Visit PDI Kitchen, Bath & Lighting

What reviewers say

Owners generally rate the Highline well for flush power, the taller seat and straightforward installation. Complaints center on noise and occasional bowl cleaning rather than reliability.

What people mention

Flush performancePraisedOwners say the swirl flush clears waste and rinses the bowl in a single flush.
Seat heightPraisedComfort Height is called out as easier for older adults and anyone with knee trouble.
NoiseCriticisedSeveral owners describe the flush as noticeably loud, especially in a small bathroom.
CleaningMixedThe rinse keeps the bowl cleaner longer, but some owners still scrub the rim and the tank seam.
InstallationPraisedBuyers report the lighter two-piece build is easy to carry and set in place.

About the Highline 1.28 gpf Two-Piece Elongated Toilet

SPECIAL ORDER ITEM. Review Returns Policy before purchase. Enhance your bathroom space with this redesigned Highline two-piece elongated toilet. With our most powerful flush built into one of our most popular toilet designs, the upgraded Highline toilet combines trusted performance with top-of-the-line features to enhance luxury and efficiency. At the heart of this toilet’s clean and simple aesthetic is Revolution 360 Technology, an advanced flushing system that uses a powerful swirling motion to thoroughly rinse the bowl. A 1.28-gallon flush provides significant water savings of up to 16,500 gallons per year, compared to a 3.5-gallon toilet without sacrificing performance. This two-piece elongated toilet weighs less that previous Highline models, making it easier to handle and install.