Use the enhanced Kontour KRA221 K1C Expansion Arm Kit to add an additional K1C monitor arm to an existing K1C installation. This provides a fast and easy means of upgrading from an existing singlearm K1C120 to a dualarm K1C220 configuration. The KRA221 can be used to add a 3rd and/or 4th arm to a centeroftable multiworkstation configuration using the KRA226 grommet plate accessory. The KRA221 provides an easy means of expanding a K2C120 singlearm mount to a K2C220 dualarm mount Use the KRA221 to add a 3rd and/or 4th arm to an existing K1C installation as well 4arm configurations require the KRA226 centeroftable grommet plate accessory See K1C120 B and K1C220B for detailed specifications This product ships in approximately 1 days