Replacement opal diffusion disc for Aristo Grid model B22 cold light heads.
Replacement opal diffusion disc for Aristo Grid model D2 and D2-HI cold light heads.
Aristo Grid cold light head for use with Omega B-22 enlargers
Aristo Grid cold light head for use with Beseler 23C enlargers
Aristo Grid model D2 cold light head for use with Omega D-series and Beseler 4x5 enlargers