http://www.ebay.com/itm/Cisco-3640-Router-Rack-Mount-Kit-Ears-ACS-3640RM-19-/180666244496?pt=US_Rackmount_Cases_Chassis&hash=item2a108c1d90

http://www.ebay.com/itm/Cisco-2610XM-2620XM-2621XM-2650XM-Rack-Mount-Kit-Ears-/171245516623?pt=US_Rackmount_Cases_Chassis&hash=item27df07374f TIMES 2

http://www.ebay.com/itm/NEW-1RU-Brackets-for-Cisco-1900-2900-2950-3500-3548-3550-Rack-Mount-Kit-Ears-NEW-/261391290890 ?pt=US_Rackmount_Cases_Chassis&hash=item3cdc22920a TIMES 2

http://www.ebay.com/itm/Cisco-CISCO1760-1760-Rack-Mount-Ears-Bracket-Kit-/190941967460?pt=US_Rackmount_Cases_Chassis&hash=item2c75073464 TIMES 2