Abstract: This apparatus relates to an attachment to the boom of a boom-type vehicle for lifting and supporting a panel assembly of the type having a panel and a purline. The purline is securely attached to the panel and disposed at an angle thereto. The attachment comprises attachment devices connectable to a forward end of the boom of the vehicle for supporting at least a portion of the purline and at least a portion of the panel. The attachment device provides selective movement between the purline, the panel, and the boom for permitting the panel assembly to be maneuvered in the desired manner at the construction site. A panel handler assembly is connectable to a forward portion of a mast assembly.