Kohler K-3506 One-Piece Elongated Comfort Height Eco Toilet From the Portrait Collection Features 12" Rough In, Top Trip Lever, 1.4 / 1.6 GPF and Seat

- Item #: BCI168493

Low Flow Toilet Restrictions

This item cannot be shipped to the following location(s): CA, TX

Save with Free Freight on ALL Kohler

Free Freight on ALL Kohler orders over $99. Few exclusions apply, US only
Offer Ends 12/31/2014

$1,498.58 - $1,723.35
Originally $1,998.10 - $2,297.80, You Save 25%
Please Select Finish
Free Shipping!
1 In Stock
Availability based on Finish selected


Please select a finish

Earn 1,499 - 1,723 points with the purchase of this product Learn More

and earn 350pts

Questions about Kohler K-3506?

Contact us for advice or more details. Our product specialists are here to help.

  • How to remove and install a Toilet
    If you have been considering replacing your toilet, yet are wondering how complicated of a job this is? Take a moment and we'll show you just how simple this job can actually be.

This product has additional required/recommended options. To configure, add to your cart.

  • Angle Supply Recommended
  • Wax Ring Kit Required

Portrait(R) Comfort Height(tm) elongated toilet with lift knob and Glenbury(tm) Quiet-Close(tm) toilet seat with Quick-Release(tm) functionality

This Portrait one-piece toilet features the Class Five(tm) flushing system for extraordinary bulk flushing performance, and integrates with the Portrait Suite to carry the understated elegance of French Provincial design throughout the room. A palette of KOHLER colors is available to complement any decor.

  • 27-3/4" x 27-1/2" x 20-1/2"
  • Elongated bowl
  • 12" rough-in
  • Includes Glenbury Quiet-Close toilet seat with Quick-Release functionality and Polished Chrome lift knob, less supply

Additional Kohler Links

Our SKU: Kohler K-3506

This product is listed under the following manufacturer number(s):

  • Kohler K-3506-47
  • Kohler K-3506-96
  • Kohler K-3506-7
    Black Black
  • Kohler K-3506-K4*
  • Kohler K-3506-NY
  • Kohler K-3506-95
    Ice Grey
  • Kohler K-3506-55
    Innocent Blush
  • Kohler K-3506-33*
    Mexican Sand
  • Kohler K-3506-52*
  • Kohler K-3506-G9*
  • Kohler K-3506-71*
    Seafoam Green
  • Kohler K-3506-6*
  • Kohler K-3506-Y2*
  • Kohler K-3506-NG*
    Tea Green
  • Kohler K-3506-58
    Thunder Grey
  • Kohler K-3506-97*
  • Kohler K-3506-0*
  • Kohler K-3506-45*
    Wild Rose

*Denotes a finish or option that has been discontinued

Kohler K-3506 Product Specifications

Specification Sheet
Installation Guide
Rough-In Guide
Bowl Height 16.5
Bowl Shape Elongated
Comfort Height Yes
Concealed Trapway No
Configuration One Piece
Country Of Origin USA
Depth 27.75
Eco Friendly Yes
Flush Technology Class Five
Flush Type Gravity Flush
Gallons Per Flush 1.6
Height 16.5
Installation Type Floor Mounted
Insulated Tank No
Lever Placement Top
Made in America Yes
Material Vitreous China
Rough In 12
Seat Included Yes
Soft Close Yes
Theme Traditional
Trapway 2.13
Trip Lever Placement Top
Water Area 11.50 x 8.50
WaterSense Certified No
Width 20.5

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Kohler K-3506 Reviews

Rated 3 out of 5 by from Think twice It costs more than one grand. It looks great. But it does not flush well. You need to flush twice to clean the toilet. Kohler needs to make the tank bigger, just the like the two- piece one. I bought the two-piece toilet which has a similar look too. It looks great, works really well and costs less. The two-piece one has the lever on the side.
Date published: 2010-12-09
Rated 5 out of 5 by from Best toilet ever! This is by far the best toilet I have ever owned. It flushes fast and never plugs up! The slow closing seat is wonderful - no more slamming seat covers.
Date published: 2010-02-12
Rated 5 out of 5 by from Attractive, very nice quality toilet This is a great toilet and the top flush mechanism is attractive and adds interest to the entire design. I love the vintage look too!
Date published: 2009-09-26
  • Does this same toilet come in the two piece option?

    A. The Kohler K-3506 is offered as a Two piece in that collection. K-4317 and K-4607.
  • how does the gravity flush differ from the siphon jet flush type and does this come with the cannister

    A. Siphoning flush uses a mechanism to produce a vacuum-like effect to dispel waste. Upon flushing, a high volume of water enters the bowl and gets pulled down through a standard 2-inch trapway, filling a siphon tube. When that tube is full, the vacuum-like effect is created and waste is dispersed. Siphoning stops once air hits the tube. This system works well, but requires a lot of water and is problematic when 1.6 gallons of water or less is used. The small trapway, which is needed to get that vacuum effect, clogs more frequently, requiring a second flush that wastes more water. Gravity flush opens a flush valve and releases between 1.28 and 1.6 gallons of water from the tank behind the toilet seat. As the water flows into the toilet bowl, gravity pulls the waste material down through the opening at the bottom of the bowl into the drain. A curved pipe called a trap at the base of the bowl near the floor slopes down and then upward to transport waste from the drain into the sewage system. When the bowl fills with water at the end of the cycle, it prevents noxious sewer gases from contaminating the air.
  • what are the toilet seat dimensions (width and length)?

    A. The Kohler K-3506 uses toilet seat model Kohler K-4733. The toilet seat is 14 3/16" wide (at the widest point) and has a height of 18 1/16" (excluding hinges). These measurements can be found under item Kohler K-4733 from the specification sheet.
  • do the elongated bidet seats fit this toilet?

    A. Yes, all elongated seats will fit this toilet.
  • I have a revival elongated one piece what is the number for replacement parts?

    A. Thank you for the question. The best way to get a replacement part is to go through Kohler directly. Their number is 800-456-4537. Good luck
  • How do you open the tank?


    The Kohler K-3506 includes a lever on top of the tank, which unscrews for lid removal. 

Buy the Kohler K-3506 at Build.com. Research Kohler K-3506 online. Find Kohler K-3506 features and specifications. Get the best deal by comparing the Kohler K-3506 today.

Recently viewed items
× Shipping Rates & Methods

The cost to ship items varies by item, shipment and shipping option.

Free Ground Shipping on Orders Over $49 *

Standard ground shipping transit time is 5-7 business days.

Free Freight Shipping on Orders Over $1500 *

Curb side delivery (also called freight or "LTL" shipping) is reserved for large, heavy, or oversized items like chandeliers, bathtubs, shower doors, etc. Items are palletized and loaded onto a large truck for shipment, and delivered to your curb by scheduled appointment. Transit time is 7-10 business days.

* For exact shipping costs, add the product(s) to your cart and enter your zip code. All offers pertain to the lower 48 states and do not include deliveries to Alaska, Hawaii or Canada.

Learn more about shipping rates and policies