Saddle Threshold Surface Type Fluted Top Aluminum Finish Color Silver Width 4 in Height 1/2 in Length 4 ft Fits Door Width 48 in Thickness 0.15 in Material Aluminum Standards ANSI/BHMA Certified A156.21 UL Classified UL10C ADA Compliant Includes #10 x 1-1/2 in FH Stainless Steel Wood Screws