Bidet seats are designed to fit most 1 piece and 2 piece standard toilets excluding the American Standard Champion 3 & 4 toilets.
Bio Bidets are not compatible with 1 piece toilets with a French curve.
Take the following measurements to find out which toilet shape you have and if the toilet is compatible:
Elongated vs Round: Measure from the center of the mounting bolt holes to the very front of the toilet bowl. If it is around 18.5 inches you have an elongated toilet. If it is around 16.5 inches you have a round toilet.
Check clearance from the center of the mounting bolt holes to the front of the tank. You will need about 1.5 inches.
Check clearance between the centers of each mounting bolt hole. You will need at least 5.5 inches and a maximum of 7.5 inches. Make sure that your measurement is not from edge to edge- must be from center to center.
Make sure there is no French curve and no raised edges on the sides.
Toilet types A & B shown below are usually compatible. Toilet type C is not compatible.
American Standard
| Good Models | Antiquity, Astute Vormax, Boulevard*, Cadet1-4, Clean, Colony, Edgemere, Mainstream, Portsmouth, Reliant, Repertoire, Retrospect, Saver, Studio Dual, Titan, Town Square*, Tropic, Yorkville |
| Bad Models | Fairfield&, Tofino*, Champion 4* |
Eljer
| Good Models | Belmont, Belmont HET*, Diplomat, Diplomat Compact, Stratus |
| Bad Models | Canterbury |
Glacier Bay
| Good Models | N2316, N2410EB/2410T , N2424EB/N2424T, N2428T/E, N2430 |
| Bad Models | N2420* |
Kohler
| Good Models | Adair*, Archer*, Bancroft, Barrington, Cimarron, Devonshire, Highline, Kathryn*, Kelston, Memoirs*, Portrait*, Saile* (will need top mount bolts for installation), Tresham, Wellworth |
| Bad Models | Gabrielle*, Persuade, Reve*, Rialto, San Raphael*, Santa Rosa*, San Souci*, Escale |
Mansfield
| Good Models | Alto, Barrett, Brentwood, Cascade, Denali, Maverick, Mont Clair, Pro-Fit 1-4, Protector, Quantum, Summit, Waverly |
| Bad Models | Aegean, Enso, Vanquish |
TOTO
| Good Models |
Aimes*, Carolina*, Carlyle, Clayton, Dartmouth, Drake, Drake 2, Entrada, Guinevere*, Legato*, Lloyd, Nexus, Promenade, Rowan, Soiree*, Supreme*, Supreme II*, Ultramax*, Ultramax II*, Vespin II |
| Bad Models | Aquia, Whitney |
DELTA
| Good Models |
Brevard, Corrente, Foundations, Lilah, Prelude, Riosa, Turner |
| Bad Models | Luxford |
Models with a * next to their names are 1 piece toilets. 1 piece toilets should be viewed with extra scrutiny as the width of the unit where the tank connects to the bowl could be too wide for our non-electric bidets to fit since some of their components hang down to the left or right side of the toilet. These non-electric units are the BB-70, BB-270, Elite3, Essential, SlimEdge, SlimGlow, SlimTwist and the Bemis WellSpring model.
However, these 1 piece toilets should pose no issue with our electric units as they fully sit on top of the toilet rim. These electric units are the DIB, A7SE, SlimOne, SlimTwo, SlimThree, U770, HD7000, USPA6800U, BB-600, BB-800, BB-1000, BB-1700, BB-2000, A8, DLS and the Bemis Haven models.
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