Reducer strips are thin pieces of material used to transition between different flooring heights or types. They help create a smooth and safe transition, preventing tripping hazards when moving from one surface to another, such as from carpet to hardwood. These strips can be made from various materials, including wood, vinyl, or metal, and come in different colors and finishes to match the surrounding flooring. They are typically installed along doorways or in open spaces where two different flooring types meet, enhancing both the appearance and functionality of the area.