The rack is a standard Electronic Industries Association (EIA) rack. It is a 4-post-EIA-310-D, which is the
current revision as specified by EIA. The vertical hole spacing alternates at .50 in. (12.70 mm) to .625 in.
(15.90 mm) to .625 in. (15.90 mm) and repeats. The start and stop space is in the middle of the .50 in. holes.
The horizontal spacing is 18.312 in. (465.1 mm), and the rack opening is specified as a minimum of 17.75 in.
(450 mm).
Step 1
Attach both brackets (part number 700-117078-01) to the sides of the chassis using the four M4 0x8mmL Phillips screws
(part number 848-0451-01) that shipped with your chassis. After the brackets are secured to the chassis, you can mount
it in the rack.
Step 2
Attach the chassis to the rack using the screws that shipped with the chassis.
There are three sets of four screws that you can use to secure the chassis to your rack. Chose the screws that
fit your rack. See
for the list of rack screws.
Note
We recommend that you install the chassis with the rear panel facing the hot aisle. (See the following illustration for an
example of air flow from front panel to back panel.)
Figure 23: Install Chassis in Rack
Right rack-mount bracket
2
Left rack-mount bracket
1
Cold aisle (chassis front panel)
4
Hot aisle (chassis rear panel)
3
Cisco Firepower 1100 Series Hardware Installation Guide
28
Mount the Chassis
Rack-Mount the Chassis
