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Overview

Model # 4436-7 Store SKU # 1000767991

An American classic, this Wellworth high-efficiency toilet tank reduces water consumption without compromising on flushing power. At 1.28 gallons per flush, this economical tank conserves up to 16,500 gallons of water per year compared to a 3.5-gallon toilet. Its streamlined style matches with a coordinated bowl for a complete toilet.

  1. Vitreous china
  1. Class Five® flushing system
  1. Includes left-hand polished chrome trip lever
  1. 1.28 gpf (4.8 lpf)
  1. Less supply line
  1. Combines with the K-4197 bowl to create a complete K-3577 Wellworth toilet

Specifications

Dimensions

Assembled Depth (in inches)
8
Assembled Height (in inches)
13.88
Assembled Weight (in lbs)
35
Assembled Width (in inches)
19.63
Packaged Depth (in inches)
21
Packaged Height (in inches)
15.75
Packaged Weight (In lbs)
35
Packaged Width (in inches)
9.5

Details

Colour Family
Black
Country of Origin
US-United States
Features
ADA-Compliant
Flush Type
Single
Gallons Per Flush
1.28
Included
Lid, Handle
Material
Vitreous China
Swatch Colour
Black
Toilet Type
Gravity Fed
WaterSense Labeled
No

Warranty / Certifications

KOHLER® One-Year Limited Warranty
Wellworth Classic 4.8 LPF Single Flush Toilet Tank Only with Class Five Flushing Technology in BlackKOHLER Wellworth Classic 4.8 LPF Single Flush Toilet Tank Only with Class Five Flushing Technology in BlackAn American classic, this Wellworth high-efficiency toilet tank reduces water consumption without compromising on flushing power. At 1.28 gallons per flush, this economical tank conserves up to 16,500 gallons of water per year compared to a 3.5-gallon toilet. Its streamlined style matches with a coordinated bowl for a complete toilet.
KOHLER
1000767991
CAD3632023-12-08
The Home Depot Canada
Wellworth Classic 4.8 LPF Single Flush Toilet Tank Only with Class Five Flushing Technology in Black is rated 0.0 out of 5 by 241.
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Rated 3 out of 5 by from Don't care for combination tank bolt and bowl seal Tank to bowl seal was one piece rubber gasket that included seals around each mounting bolt. A nice idea in theory, but I found it hard to get the tank mounted evenly with the bolts compressing the gasket material around them preventing the heads from seating. Installed the tank one night and checked for leaks. None. The next morning I flushed it and water just poured out from beneath the tank. I loosened and re-tightened the bolts again and got it to seal, but I felt like I was going to crack the tank. I've installed dozens of toilets with the standard foam gasket and have never had an issue.
Date published: 2014-03-11
Rated 4 out of 5 by from Easy install I should have purchased the tank first instead of trying to fix the leak in the old tank. The old toilet is discontinued so it's hard to get parts. I spent $$ on a lot of parts that did not solve the problem. This tank had everything already installed, just needed to tighten tank to bowl and water supply. Would have saved me hours and hours of frustration!! The only reason I gave 4 stars instead of 5, is because I use a Fluid Master toilet bleach cartridge. The hose from the cartridge is difficult to fit into the flush valve. I hope it stays put and does not cause damage to the interior parts.
Date published: 2015-05-20
Rated 5 out of 5 by from Perfect match for the 2011 tank I busted by dropping the lid into the tank which cracked the bott... Perfect match for the 2011 tank I busted by dropping the lid into the tank which cracked the bottom. This was easy to install - 3 nuts to tighten. Everything was pretty much pre assembled and ready to go. I just dropped the screws in, tightened the bolts, made sure it was level, and voila! I'm back in business for doing my business! Kohler has a great video on their site with instructions. I watched it before ordering the tank, and didn't need any other instructions. I'm a woman and did this by myself in about 10 minutes. No leaks and worked perfectly on the first try. Woot woot.
Date published: 2018-04-24
Rated 5 out of 5 by from We replaced a 33 year-old original toilet. I was skeptical about the reduced water usage, but am... We replaced a 33 year-old original toilet. I was skeptical about the reduced water usage, but am pleasantly surprised with the performance. 3 screws (instead of 2) hold the tank to the bowl. That's good. Much improved (rubber) integrated/comprehensive sealing methods for tank to bowl, with no leaks, and much reduced chance for tank damage from older methods that had metal (nuts) directly in contact with the tank. Arrived in fine condition and quality is great. We will see what the next 5 years bring relative to corrosion, etc., but so far, very pleased.
Date published: 2019-08-20
Rated 5 out of 5 by from Replacement tank. Couldn't stop a leak in my old Kohler tank (K-4620) replaced old tank w/ this K-4636-0 and it fit perfectly. Make sure your Kohler has a 3 bolt pattern at bottom of tank. Easy installation.
Date published: 2013-09-13
Rated 5 out of 5 by from Everything was included, didn't need anything additional at all I thought I was just buying the tank. All hardware, fill valve, seals and bolts were included. I've heard of some that don't even include the lid. Shipping was much faster than I expected. The price is OK but not inline with half a toilet in my view. I had two stools fall over in my truck and both tanks broke so I was in a mess and sure not happy with the situation. The guy in plumbing department at HD really knew what he was doing and the product line. For a bad situation, I got the best outcome I could expect.
Date published: 2015-02-17
Rated 5 out of 5 by from Worked Perfectly We discovered a slow leak as a result of the previous owners of our house cracking the toilet tank and attempting to seal it with silicone. It turned out it was a Kohler Wellworth toilet with part numbers that were discontinued (Mfg in 2007). I ordered this tank as a replacement (and crossed my fingers) and, thankfully, it fit perfectly. Now we have no leaks and it was much cheaper than buying a new toilet. Kudos to HomeDepot for having a black tank in stock. Usually these are special order only.
Date published: 2013-04-02
Rated 3 out of 5 by from Exact replacement for a rental apt. toilet that had a leaking tank. Installation was fairly easy ... Exact replacement for a rental apt. toilet that had a leaking tank. Installation was fairly easy and directions were good. Packing of tank in shipping carton with barely adequate protection against damage in shipment was fairly minimal. This was second tank we received. First on was sent via UPS directly to me and was received very badly damaged and not useable. Second tank was shipped directly to Home Depot local store and arrived without damage. Tank is well equipped with everything necessary to operate properly without having to purchase additional parts not supplied with tank. Fit and finish were good. Flush capacity is barely adequate but works OK. Now in operation for about 3 weeks. No major issues. Meets basic expectations I had for an exact replacement tank with improved flush mechanism from older original one.
Date published: 2018-08-21
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Does this tank come withe the internal valves and handles

Asked by: Doug
Yes it does, it is all complete and the valve etc is already installed in the tank.
Answered by: Willie
Date published: 2023-05-03

Is this 3 bolt?

Is this 3 bolt?
Asked by: John
Yes
Answered by: Larry
Date published: 2023-05-05

Will this fit a vortens 3466

Asked by: Mike
That may be doubtful since most manufacturers have their own setups for tanks and bowls. Kohler has a setup where there are 3 attaching bolts, one on the front and 2 in the back.
Answered by: Rasley
Date published: 2023-05-07

does this toilet tank fit most toilets?

My toilet is fine but the tank is broken.
Asked by: klgv
It fits most Kohler two piece toilets with the three hole mounting
Answered by: Willie
Date published: 2023-05-03

Will this size tank fit a 1.6 GPF toilet?

Asked by: Dom
Yes. I used this tank on my 1.6 GPF toilet and it works great!
Answered by: BeccaBlue
Date published: 2021-09-19

will this tank work with a rear exit toilet?

will this tank work with a rear exit toilet?
Asked by: ann
The exit position shouldn’t make a difference on the tank, but i suggest for you to get tue bowl part number and go on the Kohler page to see if the screws on the tank will line up with the holes on the bowl.
Answered by: Angel
Date published: 2019-08-04

Will this replace A. Kohler 4620 tank

Asked by: Nkh
Yes it does. I just put this tank on as a replacement for a 4620. Fit fine and flushes fine. I do not know why Kohler keeps telling people it will not work.
Answered by: TimWilding
Date published: 2023-05-06

Does this fit a 4552?

Asked by: TM
My best subjection would be to go to Kohler’s web page look up the specs on 4552 and compare it to this one or see what’s the recommendations from Kohler on which tank to use.
Answered by: Angel
Date published: 2023-05-05
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