A Before purchasing, please check that this Smart Bidet will fit your toilet. Cm 1. Measure the distance 2. Measure the distance from between the center of the center of the toilet bol the toilet bolt holes. It o o holes to the toilet tank. Th should be between toilet will need a minimum 5.5in. to 10in. clearance. 3. Measure the distance SB-2600 Seat Dimensions from the toilet bolt holes ar Fits both Elongated and Round to the front of the toilet — toilets but may have a slight 169 16.91in. to 18.5 in.