90 Degrees Angled Flat Plate Silver Anodized Number of Mounting Holes 5 Overall Height 4 1/2 in Slide-In Overall Length 4 1/2 in Overall Width 1/4 in Aluminum 6063-T6 Inside Corner Bracket Style 90 Degrees Angle 15 Series System of Measurement Inch For Profile Width/Height 5/16 in Joining Plate For Slot Width 21/64 in