Door Threshold, Surface Type Fluted Top, Mill Finish, Color Silver, Width 4 in, Height 1/2 in, Length 48 in, Fits Door Width 48 in, Thickness 0.11 in, Material Aluminum, Standards ADA, ANSI/BHMA A156.22, ANSI/ICC A117.1, Yes, Includes #10 x 1-1/2 in FH Zinc Plated Wood Screws