Wiremold Evolution Series EFB45 Floor Box Tile ShimElevate your floor box installations with the Wiremold Evolution Series EFB45 Floor Box Tile Shim. Designed to deliver a pristine, professional look, this tile shim kit makes it possible to achieve a flush finish between the floor surface and the floor box cover, even when working with thicker floor coverings and tile materials. The EFB45 TS variant is purpose built for flooring projects where precision matters, providing reliable upward adjustment