Dell PowerEdge PDU Metered LCD Best Practices Guide for Rack Enclosures - Page 10

As shown in the installation guide included in the hardware kit, line up the stabilizers in front of the rack, then secure the stabilizers to the rack using the hardware provided in the kit. See Figure 8. Figure 8: Stabilizer Installation Coupling Racks 4220 Rack Enclosures can be coupled using an interconnect accessory kit that can be purchased with the Dell Rack Enclosure. This kit can be used to couple the 4220 to another 4220 or to a previous generation Dell 4210 Rack Enclosure. Follow the steps in the instruction manuals to seal and spaces between racks with the foam provided. Then use the brackets to complete a tool-less coupling of the two racks. For maximum stability, use all four coupling brackets to secure mated racks at top and bottom in the front and rear of the racks. See Figure 9. Figure 9: Coupling Locations Dell Inc. | Data Center Infrastructure 10