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  1. FLI - Research Grade R Filter - 28mm Round Unmounted

    FLI - Research Grade R Filter - 28mm Round Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    Model#: RG-28D-R

    Regular Price: $200.00

    Special Price: $190.00

  2. FLI - Research Grade - 50mm Diameter OIII 3nm

    FLI - Research Grade - 50mm Diameter OIII 3nm

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-50D-OIII-3nm

    Regular Price: $995.00

    Special Price: $945.25

  3. FLI - Research Grade I Filter - 65mm Square Unmounted

    FLI - Research Grade I Filter - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-65S-I

    Regular Price: $1,100.00

    Special Price: $1,045.00

  4. FLI - Research Grade Clear Filter - 50mm Square Unmounted

    FLI - Research Grade Clear Filter - 50mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-50S-C

    Regular Price: $320.00

    Special Price: $304.00

  5. FLI - Research Grade I Filter - 50mm Round Unmounted

    FLI - Research Grade I Filter - 50mm Round Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-50D-I

    Regular Price: $400.00

    Special Price: $380.00

  6. FLI - Research Grade 8nm H-Alpha Filter - 50mm Square Unmounted

    FLI - Research Grade 8nm H-Alpha Filter - 50mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-50S-Ha-8nm

    Regular Price: $495.00

    Special Price: $470.25

  7. FLI - Research Grade 5nm OIII Filter - 50mm Square Unmounted

    FLI - Research Grade 5nm OIII Filter - 50mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-50S-OIII-5nm

    Regular Price: $875.00

    Special Price: $831.25

  8. FLI - Research Grade UBVRI Filter Set - 65mm Square Unmounted

    FLI - Research Grade UBVRI Filter Set - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-65S-UBVRI

    Regular Price: $5,950.00

    Special Price: $5,652.50

  9. FLI - Research Grade B Filter - 50mm Square Unmounted

    FLI - Research Grade B Filter - 50mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-50S-B

    Regular Price: $440.00

    Special Price: $418.00

  10. FLI Research Grade 28mm Diameter SII 8nm

    FLI - Research Grade - 28mm Diameter SII 5nm

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-28D-SII-5nm

    Regular Price: $460.00

    Special Price: $437.00

  11. FLI - Research Grade 8nm SII Filter - 65mm Square Unmounted

    FLI - Research Grade 8nm SII Filter - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-65S-SII-8nm

    Regular Price: $915.00

    Special Price: $869.25

  12. FLI - High Speed Filter Wheel for 10x25mm Round Filters

    FLI - High Speed Filter Wheel for 10x25mm Round Filters

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    (48 States)
    Model#: HS-1025
    $4,895.00

  13. FLI - Research Grade 5nm H-Alpha Filter - 50mm Round Unmounted

    FLI - Research Grade 5nm H-Alpha Filter - 50mm Round Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-50D-Ha-5nm

    Regular Price: $725.00

    Special Price: $688.75

  14. FLI - Research Grade 3nm H-Alpha Filter - 65mm Square Unmounted

    FLI - Research Grade 3nm H-Alpha Filter - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-65S-Ha-3nm

    Regular Price: $1,250.00

    Special Price: $1,187.50

  15. FLI - Research Grade I Filter - 28mm Round Unmounted

    FLI - Research Grade I Filter - 28mm Round Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    Model#: RG-28D-I

    Regular Price: $200.00

    Special Price: $190.00

  16. FLI - Research Grade 3nm H-Alpha Filter - 50mm Round Unmounted

    FLI - Research Grade 3nm H-Alpha Filter - 50mm Round Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    FREE SHIPPING
    (48 States)
    Model#: RG-50D-Ha-3nm

    Regular Price: $995.00

    Special Price: $945.25

  17. FLI - Research Grade V Filter - 65mm Square Unmounted

    FLI - Research Grade V Filter - 65mm Square Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-65S-V

    Regular Price: $1,100.00

    Special Price: $1,045.00

  18. FLI - Research Grade V Filter - 28mm Round Unmounted

    FLI - Research Grade V Filter - 28mm Round Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    Model#: RG-28D-V

    Regular Price: $200.00

    Special Price: $190.00

  19. FLI - Research Grade V Filter - 50mm Round Unmounted

    FLI - Research Grade V Filter - 50mm Round Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-50D-V

    Regular Price: $400.00

    Special Price: $380.00

  20. FLI - Research Grade Clear Filter - 50mm Round Unmounted

    FLI - Research Grade Clear Filter - 50mm Round Unmounted

    FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. They offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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    (48 States)
    Model#: RG-50D-C

    Regular Price: $250.00

    Special Price: $237.50

Items 1 to 20 of 77 total

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