[Elongated toilet seat]Size 14.37in/36.5 cm, L:15.7-19.2 inches (40-49CM); installation aperture: 13-20cm, please be sure to measure the distance between the two holes used to fix the hinge on the toilet. [Soft-close hinge system]This resin toilet seat adopts an enhanced zinc alloy silent slow-down hinges, which s the toilet seat is protected against bumps and closes quietly without disturbing your family's rest. [Easy to install, remove and clean]The toilet seat is equipped with adjustable quick release hinge parts, which can be quickly removed from the top without tools, and easier to clean the toilet lid from all angles. toilet seat has a 360° adjustable hinge, which can be adjusted in any direction to perfectly fit the toilet lid. Please confirm the shape and size before your hase. [Resin Toilet Seat]Elongated toilet seat is Made from heavy reinforced resin with metal hinges and bumpers to withstand a lot of pressure for better durability and stability., Manufacturer: DXPSXJL