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HERE ARE MIDWEST OPTICAL MIDOPT BP500-25.4 C-MOUNT, BP500-25.5, BP500-40.5, BP500-49, BP500-55 GREEN-BLUE BANDPASS FILTERS. OPEN BOX NEVER BEEN USED. I HAVE SOME SMALLER SIZES IF NEEDED, JUST ASK.

TYPE: GREEN-BLUE BANDPASS

FILTER SIZE: M25.4, M25.5, M40.5, M49 & M55

SPECTRAL RANGE: 440-555nm

FWHM: 248nm

TOLERANCE: +/- 10 nm

MIN. PEAK TRANSMISSION: >85%

SURFACE QUALITY: 60/40

https://midopt.com/filters/bp500/