Wall Bracket 12 inch depth w/ Hinge 4U - Black Powder Coat Swings open to the left or right. Heavy duty construction. 12 inch depth will easily accomodate virtually any rack-mounted component. 4 Rack Units High Hinge that swings open to the left or right Rack Hole Type: threaded (10-32) Cold rolled steel Powder coating 4U Wall Mount Bracket 10-32 screws DIN 41494 IEC-60297-3-100