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Parabolic Light Fixtures

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  • 2x4, 4 lamp Complete Prismatic Troffer, Wired for Bypass (Type B) T8 LED Tubes - main product image 2x4, 4 lamp Complete Prismatic Troffer, Wired for Bypass (Type B) T8 LED Tubes - alternate image 2
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    2x4, 4 lamp Complete Prismatic Troffer, Wired for Bypass (Type B) T8 LED Tubes

    $131.77
    SKU: KST-KT-DDPTLEDT8-24-4L
    BRAND: Keystone Technologies

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    2x4, 4 lamp Complete Prismatic Troffer, Wired for Bypass (Type B) T8 LED Tubes. Built for offices, schools, healthcare spaces, and commercial drop ceilings.

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    2x4, 4 lamp Complete Prismatic Troffer, Wired for Bypass (Type B) T8 LED Tubes - main product image
    New!
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    2x4, 4 lamp Complete Prismatic Troffer, Wired for Bypass (Type B) T8 LED Tubes

    KST-KT-DDPTLEDT8-24-4L
    $131.77
    2x4, 4 lamp Complete Prismatic Troffer, Wired for Bypass (Type B) T8 LED Tubes is a Keystone type b - tube ready fixtures for offices, schools, healthcare spaces, and commercial drop ceilings.This Keystone item is configured for offices, schools,...
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  • 2x4, 3 Lamp Complete Prismatic Troffer, Wired for Bypass (Type B) Single Ended T8 LED Tubes - main product image
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    2x4, 3 Lamp Complete Prismatic Troffer, Wired for Bypass (Type B) Single Ended T8 LED Tubes

    KST-KT-DDPTLEDT8-24-3L
    $129.38
    2x4, 3 Lamp Complete Prismatic Troffer, Wired for Bypass (Type B) Single Ended T8 LED Tubes is a Keystone type b - tube ready fixtures for warehouses, gyms, retail back-of-house areas, and industrial spaces.This Keystone item is configured for...
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  • 2x4, 2 Lamp Complete Prismatic Troffer, Wired for Bypass (Type B) Single Ended T8 LED Tubes - main product image
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    2x4, 2 Lamp Complete Prismatic Troffer, Wired for Bypass (Type B) Single Ended T8 LED Tubes

    KST-KT-DDPTLEDT8-24-2L
    $127.00
    2x4, 2 Lamp Complete Prismatic Troffer, Wired for Bypass (Type B) Single Ended T8 LED Tubes is a Keystone type b - tube ready fixtures for warehouses, gyms, retail back-of-house areas, and industrial spaces.This Keystone item is configured for...
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  • 2x2, 2 Lamp Complete Prismatic Troffer, Wired for Bypass (Type B) Single Ended T8 LED Tubes - main product image
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    2x2, 2 Lamp Complete Prismatic Troffer, Wired for Bypass (Type B) Single Ended T8 LED Tubes

    KST-KT-DDPTLEDT8-22-2L
    $96.38
    2x2, 2 Lamp Complete Prismatic Troffer, Wired for Bypass (Type B) Single Ended T8 LED Tubes is a Keystone type b - tube ready fixtures for warehouses, gyms, retail back-of-house areas, and industrial spaces.This Keystone item is configured for...
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Parabolic light fixtures use a multi-cell aluminum louver to control light distribution and limit glare, making them the preferred choice in workplaces with computer screens and video display terminals. The louver geometry keeps bright lamp images out of the direct line of sight while still delivering adequate horizontal illuminance on work surfaces.

These fixtures mount into standard lay-in ceiling grids in 2x2 and 2x4 configurations. Shielding angles of 45 to 55 degrees are standard; deeper-cell louvers with higher shielding angles are available for environments with lower screen tilt angles or brighter ambient requirements. LED retrofit kits and replacement LED boards are available for existing parabolic housings.

LED versions have largely replaced fluorescent lamps in parabolic fixtures. Current-generation LED boards designed for parabolic housings maintain the same carefully controlled distribution while cutting energy use by 40 to 60 percent compared to T8 fluorescent equivalents. Many options support 0-10V dimming and carry DLC listings for rebate eligibility.

Related products: LED Panel Lights and Lay-In Troffers for standard flat-diffuser grid applications, Recessed Architectural Troffers for direct/indirect distribution, and Parabolic and Troffer Retrofit Kits for upgrading existing housings without full fixture replacement.