This CRL Adjustable Oak Door Sill is 1-1/8" (29 mm) tall and will adjust 1/4" (6.4 mm) to compensate for uneven door bottoms. There is also a vinyl moisture barrier between the oak sill cap and the extruded aluminum sill plate. Used on out-swinging doors the overall width of this sill is 5-5/8" (143 mm). Mounting screws not furnished. Method of mounting to be determined by the installer depending upon the substrate at time of installation.