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Highline Arc The Complete Solution 2-piece 1.28 GPF Single Flush Round-Front Toilet in White (Slow-Close Seat Included)

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  • Easy to install with included slow-close toilet seat ($30 value)
  • Class 5 Flush exposes 90% less seal material (see video)
  • Comfort Height offers chair-height seating (about 2 in. taller)
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Product Overview

Trusted for years by professionals, Highline toilets are KOHLER bestselling toilet family. A brilliant blend of style and water efficiency, this Highline Arc toilet is distinguished by an elegant flared tank. Coupled with KOHLER powerful canister flush valve, there's no sacrificing performance for design. An innovative 1.28 Gal. flush setting provides significant water savings of up to 16,500 Gal. per year, compared to an old 3.5 Gal. toilet. This Complete Solution package includes everything necessary for installation and is available exclusively at The Home Depot.
  • 2-piece toilet
  • Round-front bowl offers an ideal solution for smaller baths and powder rooms
  • Comfort height feature offers chair-height seating that makes sitting down and standing up easier for most adults
  • 1.28 Gallons Per Flush (GPF)
  • Standard left-hand polished chrome trip lever included
  • Complete solution toilets provide everything you need in 1 box, including bowl, tank, slow-close toilet seat, cover, wax ring and floor hardware
  • Single-flush gravity uses the force of gravity and a precision-engineered tank, bowl and trap way to create a strong siphon during flushing
  • Class 5 flushing technology offers virtually plug-free performance and rinsing power for a clean bowl
  • Standard 12 in. rough-in
  • 3-bolt installation
  • Supply line not included
  • WaterSense

Info & Guides

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Bowl Height without Seat (in.)
Flush Valve Size (in.)
Product Depth (in.)
27.75 in
Product Height (in.)
30.375 in
Product Width (in.)
18.0625 in


Bowl Height
Chair Height
Bowl/Seat Shape
Color Family
Commercial / Residential
No Additional Features
Flushing Technology
Gravity Fed
Flushing Type
Single Flush
Gallons Per Flush
Handle Location
Complete Kit
MaP Performance Rating
Not Rated
Vitreous China
Mount Location
Floor Mount
Product Weight (lb.)
98.70 lb
Rough In Size
12 inch Rough In
Seat Front Type
Toilet Type
Trapway Diameter (in.)
Trip Lever Location
Left Front

Warranty / Certifications

Certifications and Listings
ADA Compliant,ASME Certified,CSA Certified,EPA Approved
Manufacturer Warranty
One-Year Limited Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.4
    out of 6,099 reviews
  • 83% recommend this product
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Showing 1-10 of 6,099 reviews
Easy install
Easy installation with included hardware and it looks great. We are on septic so appreciate the fact that it's HET (1.28 gallons per flush).
    • Recommended
    Missing rubber piece on toilet seat/board. No QC?
    Purchased 3 of these for our remodeling, so far the first one is missing of the 2 plastic pieces that attached to the board (see picture). I searched everywhere inside the box and can't find it. Hopefully the next 2 are going to be better.
      5 people found this helpful
      Nice toilet but needs better quality assurance
      Purchased two - one was perfect but the second had very low water in the bowl because the refill tube (part K-1248134) was kinked. Kohler shipped me a new one, but it took several days. Factory should not have let it ship with this problem.
        • Recommended
        9 people found this helpful
        Rating provided by a verified purchaser...
        Rating provided by a verified purchaser
        • Verified Purchase
        1 person found this helpful
        A great toilet at a great price. Easy to install. Pick up a thick wax ring and be certain to m...
        A great toilet at a great price. Easy to install. Pick up a thick wax ring and be certain to make sure the tank is secured to the bowl, tighten the nuts and bolts. Highly recommend.
        • Verified Purchase
        • Recommended
        4 people found this helpful
        Being that my toilets were both the standard height water guzzling toilets of old, anything halfw...
        Being that my toilets were both the standard height water guzzling toilets of old, anything halfway decent would be an improvement but so far everything is going well. My plumber did the install on both and he had no complaints. I initially wanted a dual flush for my bathroom but my plumber pointed out this toilet was just as good for water conservation. After that I ordered another for my master bath and I am very pleased with both plus they look so darn good. It has a very quick flush which is strange at first, still a little odd to me, but I keep reminding myself of how old my original units were. With my old toilets you had to grab the handle but with these the gentlest push of the handle does the job. My mother was so impressed with the powerful flush and the quick water refill that I’m thinking of upgrading the toilets at her house as well. As for the seat, I don’t like the light weight plastic but I’m guessing that’s needed for the slow close feature which by the way is a very very slow. I may end up switching the seat out but I purchased this toilet for the size, both of my bathrooms are very small, height, and low water consumption, not the seat. Granted I’ve only had these toilets for a few weeks now but I’m not anticipating any issues. Great toilet with a great price.
        • Verified Purchase
        • Recommended
        19 people found this helpful
        mine came with the wrong toilet seat
        Bought and installed one this evening. The toilet itself seems just fine. Mine came with the elongated seat that doesn't match the round bowl. Quality QC Kohler!! Now I have to try and find another seat that fits this darned thing.
        Response from Kohler Product ExpertMay 7, 2021
        Hi Adam, this is Sarah with Kohler Co. I'm very sorry to hear your item was packaged with the wrong shape toilet seat. This is nothing you should expect when you purchase the quality of Kohler. We are happy to send the correct seat to you. Please email us at KohlerCustServ@kohler.com. Sincerely, Sarah S. Kohler Customer Service
          • Recommended
          13 people found this helpful
          My Kohler Highline Arc works well with a powerful flush. I gave a four instead of 5 because it was missing a part.
          The toilet was rather easy to assemble. All parts were in the box with the exception of a small insert that fits under the toilet seat for stability. It only had one. I have no idea how to order this little plastic piece that was missing. Other than that, I am very satisfied with the performance of the toilet and it's height.
            • Recommended
            20 people found this helpful
            Works great! And the flush is so quiet! I wish...
            Works great! And the flush is so quiet! I wish I could have found it with a 10-in rough in for my other bathroom.
            • Verified Purchase
            7 people found this helpful
            Rating provided by a verified purchaser...
            Rating provided by a verified purchaser
            • Verified Purchase
            7 people found this helpful
            Showing 1-10 of 6,099 reviews