Official Jacuzzi Toilet Flapper used on Perfecta, Espree, Era, and Maxima toilets. 3" with Chain and Seal. If you have any questions as to if this will fit in your toilet, please contact us by visiting our seller profile with your toilets model number. You can find your model number stamped on the bottom of the toilet tank lid. This is not universal, but will fit on almost all toilets made by Jacuzzi. Part # HF04000