Wiremold Evolution Series EFB45 Floor Box Bare Concrete/Terrazzo Trim RingThe Wiremold Evolution Series EFB45 Floor Box Bare Concrete Terrazzo Trim Ring is a purpose built solution for commercial spaces that demand a clean, professional finish where floors are either bare concrete or terrazzo. This nonmetallic trim ring is engineered to sit flush with the floor, delivering a seamless transition between the surface and the floor box while protecting the floor opening from wear, debris, and daily traffic. Designed for use