48U Rack Cabinet Type 7D6ERack cabinet setupInstall rack extension kitInstall rack extension kitSee this topic to learn how to install extension kit.Install 48U Advanced Rack Extension KitSee this topic to learn how to install 48U Advanced Rack Extension Kit.Install 48U Advanced Rack Extension Kit with RDHXSee this topic to learn how to install 48U Advanced Rack Extension Kit and RDHX.Install 48U Standard Rack Extension KitSee this topic to learn how to install 48U Standard Rack Extension Kit.Give documentation feedback