Fitting a Swash bidet toilet seat onto an existing toilet
How to measure for a Swash toilet seat
Measure the distance between the bolt holes. The space must be between 5-1/4 inches and 8 inches.
Please note: To properly fit SE400, SE600, IS707, CL510, and CL950 models, this distance must be 5-1/2 inches.
Measure the distance from the center of the bolt holes to the toilet tank to ensure proper clearance. There must be at least 1½ inches of clearance.
Measure the distance from the bolt holes to the front of the toilet bowl to determine if you have a round or elongated fixture.
If your measurement is 18" – 19½" order an Elongated Swash
If your measurement is 16" – 17¾" order a Round Swash
Is the distance from the center of the bolt holes to the toilet tank less than 2 inches?
The Swash may extend slightly over the front edge of your toilet bowl.
Measure the distance from the front of the toilet tank to the front of the toilet bowl.
If this measurement is less than 20½ inches, consider purchasing a Round size to reduce the amount the seat extends over the front edge, even if your fixture is elongated.
The overall length of the Round Swash is 19.4 inches. A distance less than 19.4 inches from the tank to the front of the toilet bowl will also cause overhang.
Fitting a Swash bidet toilet seat to a new toilet
If you've decided you'd like to install the Brondell Swash on a new toilet, we recommend you find a toilet that matches your size, budget, design, performance, and height requirements. Once you find your toilet, use the toilet manufacturer’s spec sheet and the diagram below to calculate whether it is compatible. If the value of “D” is greater than 1-1/2 inches, the toilet is compatible with your Swash.
If you’re looking for inspiration for your new toilet, below is our “Best Of” list.
Please note, Brondell has not used any of these toilets and is not responsible for the performance of these toilets. Brondell has no affiliation with the manufacturers listed below:
- Best High End: Toto Drake II Two-Piece toilet
- Best High End Concealed Trap Away Toilet (Skirted): Toto Legato One-Piece high-Efficiency. You will need Alternative T-Valve and Top Mount Hardware for this installation.
- Dual Flush High End: Toto Connelly Close Coupled toilet, 1.28GPF & 0.9GPF
- Dual Flush and Budget-Friendly: Glacier bay 1-piece High Efficiency Dual Flush Elongated Toilet in White
- Wall-Hung: Toto Maris (Because this toilet uses an In-Wall Tank System, your plumber will need to provide an accessible ½” water supply connection for the bidet)
Swash 100 EcoSeat Toilet Fit Information
The Swash Ecoseat S100 is designed to fit Elongated toilets only, however this model will fit select Round fixtures. Please reference the diagram above for size verification. The Ecoseat S100/101/102 will not fit French Curve fixtures.