SIZE: ELONGATED: The elongated toilet seat fits most standard elongated toilet seats. It measures 18.5" in length, 14.2" in width, and 5.6" of mounting hole distance. Please measure your toilet size before your purchase to determine if you need ELONGATED size. SLOW-CLOSE SEAT: Toilet seat round closes slowly and quietly prevents accidental slamming or pinching fingers, providing a quiet environment for your family. EASY TO CLEAN: Opens the hinged cover, Quick Release hinges allow oval toilet seat to be unlatched easily from the toilet. You can clean the areas that are hard to reach, keeping your bathroom fresh and comfortable.