STP850/AL/OP/2M EXTRUSION DEEP SURFACE ALUM. OPAL 13MM X 16MM X 2M Order Code 82963, STP852/AL/OP/2M EXTRUSION CORNER MOUNT ALUM. OPAL 16MM X 16MM X 2M Order Code 83335, STP854/AL/OP/2M EXTRUSION PLASTER RECESS ALUM. OPAL 13MM X 48.2MM X 2M Order Code 83342