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HERE ARE MIDWEST OPTICAL MIDOPT BN532-22.5, BN532-25.4 C-MOUNT, BN532-27, BN532-37, BN532-37.5, BN532-43, BN532-46, BN532-49, BN532-52 NARROW GREEN BANDPASS FILTERS. NEVER BEEN USED BUT STILL LISTED THEM AS USED. LET ME KNOW IF THERE IS A SIZE YOU NEED, I HAVE SMALLER SIZES THAN 37MM THAT'S NOT LISTED AND I'LL CHECK TO SEE IF I HAVE IT.

TYPE: NARROW GREEN BANDPASS

FILTER SIZE: M22.5, M25.4 C-MOUNT, M27, M37, M37.5, M43, M46, M49, M52

SPECTRAL RANGE: 525-550nm

FWHM: 55nm

TOLERANCE: +/- 7nm

MIN. PEAK TRANSMISSION: >85%

SURFACE QUALITY: 60/40

https://midopt.com/filters/bn532/

PLEASE SEE MY OTHER AUCTIONS FOR MORE GREAT DEALS!