The Balt Add-a-Carrel, Model 89831 (Teak) is a real benefit to the Floor Carrel design. Black metal connectors join a second desk surface and an additional wall to an existing Floor Carrel. Net result: Two carrels attached to each other, separated by a common wall, giving you two private working spaces. Purchase a Floor Carrel, then connect as many Add-A-Carrels as you need.