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

    FLI - Research Grade B 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-B

    Regular Price: $200.00

    Special Price: $190.00

  2. 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

  3. FLI - Research Grade LRGB Filter Set - 28mm

    FLI - Research Grade LRGB Filter Set - 28mm

    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-LRGB

    Regular Price: $475.00

    Special Price: $451.25

  4. 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

  5. FLI - Research Grade U Filter - 28mm Round Unmounted

    FLI - Research Grade U 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-U

    Regular Price: $200.00

    Special Price: $190.00

  6. FLI - Research Grade UBVRI Filter Set - 50mm Round Unmounted

    FLI - Research Grade UBVRI Filter Set - 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-UBVRI

    Regular Price: $2,000.00

    Special Price: $1,900.00

  7. 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

  8. FLI - Research Grade Luminance Filter - 50mm Round Unmounted

    FLI - Research Grade Luminance 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-L

    Regular Price: $270.00

    Special Price: $256.50

  9. 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

  10. FLI - Research Grade 8nm H-Alpha Filter - 50mm Round Unmounted

    FLI - Research Grade 8nm 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-8nm

    Regular Price: $495.00

    Special Price: $470.25

  11. FLI Research Grade LRGB Filter Set 50mm Round Unmounted

    FLI - Research Grade LRGB Filter Set - 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-LRGB

    Regular Price: $950.00

    Special Price: $902.50

  12. 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

  13. FLI - Research Grade Luminance Filter - 50mm Square Unmounted

    FLI - Research Grade Luminance 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-L

    Regular Price: $350.00

    Special Price: $332.50

  14. 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

  15. FLI - Research Grade UBVRI Filter Set - 50mm Square Unmounted

    FLI - Research Grade UBVRI Filter Set - 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-UBVRI

    Regular Price: $2,200.00

    Special Price: $2,090.00

  16. FLI - Research Grade Clear Filter - 65mm Square Unmounted

    FLI - Research Grade Clear 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-C

    Regular Price: $375.00

    Special Price: $356.25

  17. FLI - Research Grade LRGB Filter Set - 65mm Square Unmounted

    FLI - Research Grade LRGB 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-LRGB

    Regular Price: $2,595.00

    Special Price: $2,465.25

  18. FLI - Research Grade Luminance Filter - 65mm Square Unmounted

    FLI - Research Grade Luminance 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-L

    Regular Price: $695.00

    Special Price: $660.25

  19. 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

  20. FLI - Research Grade - 28mm Diameter H-Alpha 8nm

    FLI - Research Grade - 28mm Diameter H-Alpha 8nm

    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-Ha-8nm

    Regular Price: $300.00

    Special Price: $285.00

Items 1 to 20 of 70 total

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