... ", 4.5", and 6", 8", 10",CASE MATERIAL:Steel case, steel black case, steel chrome plated ... can take with front flange, backflange and U-clamp.BEZEL MATERIAL:Steel black bezel, steel bezel, chrome plated ... ", 4.5", and 6", 8", 10",CASE MATERIAL:Steel case, steel black case, steel chrome plated ... can take with front flange, backflange and U-clamp.BEZEL MATERIAL:Steel black bezel, steel bezel, chrome plated ...