Table Top Carrel – A tall divider partition that is placed on the desk or table top. It does not come with the desk attached. Study Carrel Desk – A standalone desk that contains tall privacy panels on either side of the desk. Study Carrel Add On – A standalone desk that contains a tall privacy panel on only ONE side of the desk. It is meant to be used with a study carrel desk that contains privacy panels on both sides of the desk.