CSL1902A 73mm Dia x 10mm thick CSL1902B 75mm Dia x 19mm thick CSL1902C 85mm Dia x 12mm thick CSL1902D 85mm Dia x 19mm thick CSL1902E 95mm Dia x 12mm thick CSL1902F 95mm Dia x 19mm thick Purpose
Various size replacement glass circular lenses to suit most cell door spy hole designs.