Threshold Surface Type Smooth/Fluted Top Aluminum Mill Finish Color Silver Width 5 in Height 1 in Length 4 ft Fits Door Width 48 in Thickness 0.105 in Material Aluminum Insert Material Vinyl Insert Color Gray Standards ANSI/BHMA Certified A156.21 UL Classified UL10C ADA Compliant Includes #10 x 1-1/2 in FH Zinc Plated Wood Screws