Installing the Rack Mount Rail with Attached Extension Assembly

Refer to Installing the Rack Mount Rail with Extension Assemblies as you perform the following procedure. You must supply eight rack screws to install the rack mount rails in the equipment rack.

Installing the Rack Mount Rail with Extension Assemblies

1 = Rack mount rail with extension assembly	4 = Rack rear (hot air outlet)
2 = Right/left front assembly label location	5 = Rail assembly adjustment screws
3 = Rack front (cool air inlet)	6 = Airflow direction

To install the rack mount rail with extension assembly, follow these steps:

1. Adjust the length of the two assemblies (callout 1) to agree with the distance between the outer face of the vertical rack posts.
   The screws (callout 5) holding the assembly together may need to be loosened slightly to allow for the adjustment. Retighten any loosened screws after the adjustment has been made.
2. Install the side of the assembly labeled "right front" (callout 2) on the front (cool air inlet) right rack post.
   Secure the assembly to both the front and rear posts, using rack appropriate screws or fasteners that you supply.

   Do not use the middle hole when securing the assembly to the rack post. The middle hole is used to secure the adapter plate (previously installed on the chassis) to the assembly.

3. Repeat step 2 for the assembly labeled "left front."