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HERE ARE MIDWEST OPTICAL MIDOPT NEAR-IR LONGPASS FILTERS. THEY ARE LP815-40.5, LP830-30.5, LP830-37.5, LP830-40.5, LP830-52, LP830-55, LP830-62, LP850-27, LP850-30.5, LP850-46, LP850-49, LP850-52, LP850-55. NEVER BEEN USED BUT STILL LISTED THEM AS USED. LET ME KNOW IF THERE IS A SIZE OR QUANTITY YOU NEED THAT'S NOT LISTED AND I'LL CHECK TO SEE IF I HAVE IT. I ALSO HAVE SMALLER 25mm & 27mm SIZES AVAILABLE.

TYPE: NEAR-IR LONGPASS FILTER

FILTER SIZE: M27, M30.5, M37.5, M40.5,M49, M52, M55

SPECTRAL RANGE: LP815 825-1100, LP830 845-1100

TOLERANCE +/- 10 nm

MIN. PEAK TRANSMISSION: ≥90

SURFACE QUALITY: 60/40

https://midopt.com/filters/longpass/

PLEASE SEE MY OTHER AUCTIONS FOR MORE GREAT DEALS!