Kodak Cat. No. 1521517 5½-inch diameter No. 1A (light red) safelight filter.
5½-inch diameter 1A type (light red) filter for Kodak Model A and Model B safelights.
1A type light red safelight filter for safelights that accept 8"x 10" size filters.
Used Premier 5x7 Darkroom Safelight with OC type filter and mounting bracket.
Paterson omni directional safelight for use with B&W photographic papers.
OC type safelight filter for safelight housings that accept 5"x 7" filters.
Replacement FBD (yellow edge) filter set for Thomas sodium vapor Super Safelights