Beseler 39mm Lensboard with 5/8" Extension (For 105-135mm Lenses)

This 39mm Lensboard is compatible with Beseler 23C, 45, and 810-series enlargers, and has a 5/8" extension from the front of the board, making it ideally suited for 105-135mm lenses when enlarging film. It also incorporates a red light pipe for illuminating the lens' aperture scale and is drilled to accept standard 39mm/M39-mount lenses.