Cisco 1RU Cable Management KitThis is a cable management kit for a 1RU rackmount kit. It will fit any rack kit that has the appropriate screw hole, but is specifically made for the STK-RACKMOUNT-1RU and RCKMNT-1RU kits. It is commonly used on Cisco 2900, 2900XL, 2950, 2948G, 1900, 3500, 3750, 3750G-GE-TX, and 3550 switch rackmount kits as well as the Cisco 1760 router rackmount kit. This is the standard (or shorter) 1RU kit. Length 3.25 in and width 1.5 in approx.