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FLI Research Grade 50mm Square SII (5 nm)

FLI Research Grade filter sets are par focal to F4.5
Size: 50 mm +0.2 / -0.5mm
Shape: square
Thickness: 3mm +/-0.1mm
Bandwidth: 5 nm
Parallelism: 30 second or better
Surface Flatness: 1/4 wave per inch

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