Complete red safety filter assembly for 3301D enlargers with all mounting hardware included. Will also fit the LPL 66-SII enlarger Omega Dichro C76 Color enlarger, Saunders/LPL 67D Dichroic and 67C condenser enlargers, Honeywell Nikor Dichroic 6x7 and System 6x7 condenser enlargers, and the Rollei EC 6x7 Dichroic Color enlarger. However, reuse of your existing filter positioner plate is recommended in these circumstances.