1.Compatibility: Designed to be compatible with a range of toilet models, including G-Max, THU499S, THU331S, THU175S & 2021BP, this toilet flapper optimum convenience. It's important to note that not all toilet tanks are the same size, so be sure to measure the opening before purchasing. 2.Water conservation: This large toilet flapper plays an important role in preserving precious water resources by carefully controlling the amount of water dispensed during each flush, making it an effective solution for reducing water waste. 3.: The rubber toilet flapper replacement is made from robust and resilient rubber, and boasts durability and resistance against water and chemical corrosion, ensuring longevity in its performance. 4. & functional: Crafted from robust and resilient rubber, our universal toilet flapper is built to last, withstanding the test of time and resisting water and chemical corrosion. It effectively minimizes leaks and forms a secure seal around the flush valve to reduce water waste.