Fluidmaster Duo Flush Complete System (550DFRK-3)

Item no: 4424289 | 039961004420
290  Estimated 

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  • Converts your single flush toilet to a dual flush toilet
  • Perfect for all toilets including: older high gallon toilets (1994 and older), 1.6 gallon toilets (1994 and newer), high efficiency toilets (HET-1.28 gallons) and dual flush toilets
  • Flush valve stocked separately as Ace no. 4422234
  • Flush valve has durable snap-on swivel mount which makes for a quick install
  • Easy adjust dials allow you to set the level of the water without removing the valve from the tank
  • The quietest and most powerful fill valve on the market
  • Includes Fluidmaster Performax fill valve which boosts dual flush performance to original manufacturer specifications
  • Fill valve stocked separately as Ace no. 4424149
  • Durable snap-on swivel mount makes for a quick install
  • Includes dual action handle

This item can be shipped to your home. Or pickup this item at your local Ace Store for FREE*.

*Items shipped from our warehouse to stores in Alaska and Hawaii will receive a 70% shipping discount.

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We want you to be fully satisfied with every item that you purchase from www.acehardware.com. If you are not satisfied with an item that you have purchased (excluding Gift Cards and gas-powered outdoor equipment*), you may return the item up to thirty days after the original purchase date to receive a store credit (less shipping, handling and other charges). We recommend that you make returns of online purchases to an Ace retail store near you which will issue your store credit. If you do not have an Ace retail store near you, please contact a Customer Service Specialist by calling 1-866-290-5334 for complete return instructions. Please refer to our Return Instructions for more information about returning a purchase.

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What people are saying

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by PowerReviews
FLUIDMASTER 1021686Fluidmaster Duo Flush Complete System (550DFRK-3)

(based on 3 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 1 Stars



Reviewed by 3 customers

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Great product

By cruzenski

from Sanatoga, PA

About Me Avid Do-It-Yourselfer


  • Easy To Install
  • Easy To Use


    Best Uses

    • Bathroom

    Comments about FLUIDMASTER 1021686 Fluidmaster Duo Flush Complete System (550DFRK-3):

    This product is pretty good. It was easy to install and seems durable. It definitely does use much less water than my old product and only needs one flush. I recommend and would purchase again.


    Will not work in Toto one piece toilets

    By JoeR

    from Anaheim, CA

    About Me Avid Do-It-Yourselfer

    Comments about FLUIDMASTER 1021686 Fluidmaster Duo Flush Complete System (550DFRK-3):

    Unfortunately all 3 of the toilets in my house are Toto one piece toilets which have a 3" opening for the flush valve. These units are built for the standard 2.5" opening and therefore would not fit these toilets. I was not going to give any stars since I can not honestly review this product but the system requires at least 1 star. This does not mean I thought it was a bad product, just that I was unable to use it.


    Very innovative product

    By Roman R

    from Cedar Rapids,Iowa

    Comments about FLUIDMASTER 1021686 Fluidmaster Duo Flush Complete System (550DFRK-3):

    It is a very nice plug and play unit. Comes with a extra mount on the fill valve to accommodate most toilets. It has plenty of flushing power in both modes. It is adjustable but I didn"t have to change the settings at which they were set at out of the box. I would definitely recommend to others . Hopefully it saves as much water as estimated.

    • Was this a gift?:
    • Yes

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