Tall Gusseted Inside-Corner Bracket, Black, Anodized, Number of Mounting Holes 4, Overall Height 3 in, 21/64 in, Overall Length 3 in, Overall Width 1 5/16 in, Aluminum 6105-T5, Inside Corner Bracket Style Gusseted, 15 Series, System of Measurement Inch, Inside-Corner Bracket, For Slot Width 21/64 in