3 Inch Toilet Flapper: Our toilet flapper fits 3-inch toilet flush valve. Our toilet flapper is specifically designed for use with a flush valve that has a 3-inch diameter opening. LONG-LASTING DURABILITY: Crafted from high-quality chlorine- plastic, which is very -, Our toilet flapper ensures long-term usage and withstands the effects of hard water. Effectively control flushing to conserve water over the long term Easy to Install: Close the water valve leading to the toilet, drain the water from the tank, remove the old leaking flapper, install our new toilet flapper, and install the chain. Notication: If your old baffle is hard to take out, you can cut it, don't pull it open forcibly to avoid damaging the tap. When you open the package have an odor, placed after a period of time, the smell be eliminated.