When purchasing a ceiling frame, please include in the explanation which PE-Plus model it is for!The ceiling mounting crown ensures easy installation on PE panels. Simply attach the crown to the ceiling and install the panel. This allows the panel to be installed as close to the ceiling as possible.BC004 ceiling frame is suitable for PE350-Plus; PE540-Plus; PE700-Plus and PE1000-PlusBCoo5 ceiling frame is suitable for PE270-Plus; PE380-Plus.