Riosa Elongated Concealed Trapway Toilet

Model #:C43906-WH

What does this model number mean?

Color Shown: White
Toilet $448.30
List Price as
Shown (US $):1
Exclusively available at Home Depot.

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Product Features and Benefits

Watersense certified by CSA International

This product meets EPA criteria for WaterSense

Product Support, Repair Parts & Tech Specs

Support Information:

Installation Instructions / Owner's Manual

Installation Information

  • Gallons Per Flush: 1.28 gpf
  • Toilet Bowl Shape: Elongated
  • Bowl Height: Chair height
  • Seat Type: SoftClose/QuickRelease Seat
  • SmartFit™ Tank-to-Bowl Connection: Yes
  • SmartFit™ Multi-Tool: Yes
  • SmartFit™ Supply Line: Yes
  • EZ Out™ Toilet Removal Kit: Yes
  • Rigid Supply Line: No
  • No Additional Tools Required for Installation

Troubleshooting Resources


Riosa Elongated Concealed Trapway Toilet 4.3 5 3 3
Great style and performance We were looking for a new toilet that would flush without clogging, and also do away with leaky tank bolts. We thought the tall tank made sense. It would have been nice if it came with a small tube of silicone, since I had to go buy a tube. Overall, it looks great in our bathroom and the strong efficient flush can't be beat! April 6, 2014
This product has great features but Love all the cleaning features,however I don't like the new hieght,because the seat is easy cleaning it's often lose.Worst of all it doesn't always take away the waist.That's real job. June 25, 2014
Great Product The toilet looks great, very modern and beautiful. They are very quiet when operated and easy to clean. August 18, 2014
From time to time, Delta Faucet Company runs sweepstakes in connection with its Ratings and Reviews. Certain of the reviews posted above on this page may have entitled the author to a sweepstakes entry.

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Riosa Elongated Concealed Trapway Toilet
1 answer

can the gpf be adjusted to 1.6 gpf?

home depot specs show Gallons per Flush Range to be 1.28 to 1.59. is this adjustable?
Topics: Performance
9 months ago
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Hi Amy, Thank you for your question. The model C43906-WH uses 1.28 gallons per flush. The flush is not adjustable.
Skill Level: Advanced
9 months ago
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  1. The manufacturers list price (U.S. dollars) is shown for comparison only. The actual retail price may be different from the price shown.