A furring strip is a thin, narrow piece of wood or metal used in construction and renovation. It serves as a framework to create a level surface for attaching materials like drywall or siding. Furring strips help to insulate walls and provide a space for electrical wiring or plumbing. Typically, furring strips are installed vertically or horizontally on walls or ceilings. They are essential for ensuring that the finished surface is even and secure. This technique is commonly used in both residential and commercial buildings to improve aesthetics and functionality.