content_image/986172.jpg
## 10.3.4 Bottom Exit cabling feature 

The Bottom Exit cabling feature (FC 7919) is required for raised floor environments, where I/O cabling or line cords must exit from the bottom of the frame. This feature includes the hardware to allow bottom exit, and other components for cable management and filler plates to preserve the recommended air circulation, as shown in Figure 10-8. 

## 10.3.5 Frame Bolt-down kit 

<img src='content_image/986172.jpg'>

A bolt-down kit (FC 8006) is available for the z14 ZR1 servers. The kit provides hardware to enhance the ruggedness of the frame, the frame stiffener, and to tie down the frame to a concrete floor. 

The frame tie-down kit can be used on a non-raised floor where the frame is secured directly to a concrete floor, or on a raised floor where the frame is secured to the concrete floor underneath the raised floor. Raised floors 241.3 mm (9.5 inches) - 1270 mm (50 inches) are supported. 

The kits help secure the frames and their contents from damage when they are exposed to shocks and vibrations, such as in a seismic event. The frame tie-downs are intended for securing a frame that weighs up to 1308 kg (2885 lbs). 

For more information see IBM 3907 Installation Manual for Physical Planning,  GC28-6974. 

## 10.3.6 Service clearance areas 

z14 ZR1 servers require specific service clearance to ensure the fastest possible repair in the unlikely event that a part must be replaced. Failure to provide enough clearance to open the front and rear covers results in extended service times or outages. 

For more information, see IBM 3907 Installation Manual for Physical Planning,  GC28-6974. 

