Door Threshold, Surface Type Smooth Top, Aluminum Mill Finish, Color Silver, Width 3 in, Height 1/4 in, Length 4 ft, Fits Door Width 48 in, Thickness 0.125 in, Material Aluminum, Standards ANSI/BHMA A156.21, ANSI/BHMA, CAN/ULC S104, IBC, ICC/ANSI...