An overlap reducer is a type of transition molding used in flooring installations to create a smooth transition between two different types of flooring materials, typically with different heights or thicknesses. It is designed to overlap one flooring surface while reducing the height difference between the two surfaces, providing a seamless and visually appealing transition. This type of reducer is commonly used where hardwood, laminate, or tile flooring meets carpet, vinyl, or other lower-profile flooring materials. It helps to prevent tripping hazards and provides a finished look to the flooring installation.