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Neptun Light Sign LED Retrofit Tubes

Neptun Light DI-88 Series Direct/Indirect T8 Sign Tube

We are your Neptun Light authorized distributor for DI-88 Series Direct/Indirect T8 Sign Tube lamps. These self-ballasted lamps work in most commonly used T8 and T12 fixtures, making installation quick and easy. Select the sub-category below for the type you need or search above for the specific part number.

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  1. Main Image Neptun Light SGN-LED36-DI-T8-UNV-850 22 Watt 36 Inch LED T8 Sign Tube Lamp Retrofit 5000K
    Specifications
    • Wattage: 22 Watt
    • Life: 70,000 hours
    • Lumens: 2,200
    • Technology: LED - Retrofit Kit
    • CRI: >80
    • Length: 33.18"
    • Voltage: Multivolt 120V-277V
    $40.00
    PART# SGN-LED36-DI-T8-UNV
    MOQ: 1
  2. Neptun Light SGN-LED48-DI-T8-UNV 26 Watt 48 Inch LED T8 Sign Tube Lamp Retrofit
    Specifications
    • Wattage: 26 Watt
    • Life: 70,000 hours
    • Lumens: 2,600
    • Technology: LED - Retrofit Kit
    • CRI: >80
    • Length: 45.19"
    • Voltage: Multivolt 120V-277V
    $50.79
    PART# SGN-LED48-DI-T8-UNV
    MOQ: 1
  3. Neptun Light SGN-LED60-DI-T8-UNV 32 Watt 60 Inch LED T8 Sign Tube Lamp Retrofit
    Specifications
    • Wattage: 32 Watt
    • Life: 70,000 hours
    • Lumens: 3,200
    • Technology: LED - Retrofit Kit
    • CRI: >80
    • Length: 57.20"
    • Voltage: Multivolt 120V-277V
    $63.09
    PART# SGN-LED60-DI-T8-UNV
    MOQ: 1
  4. Main Image Neptun Light SGN-LED64-DI-T8-UNV-850 35 Watt 64 Inch LED T8 Sign Tube Lamp Retrofit 5000K
    Specifications
    • Wattage: 35 Watt
    • Life: 70,000 hours
    • Lumens: 3,500
    • Technology: LED - Retrofit Kit
    • CRI: 80
    • Length: 61.14"
    • Voltage: Multivolt 120V-277V
    $67.69
    PART# SGN-LED64-DI-T8-UNV
    MOQ: 1
  5. Neptun Light SGN-LED72-DI-T8-UNV 40 Watt 72 Inch LED T8 Sign Tube Lamp Retrofit
    Specifications
    • Wattage: 40 Watt
    • Life: 70,000 hours
    • Lumens: 4,000
    • Technology: LED - Retrofit Kit
    • CRI: >80
    • Length: 69.17"
    • Voltage: Multivolt 120V-277V
    $75.49
    PART# SGN-LED72-DI-T8-UNV
    MOQ: 1
  6. Main Image Neptun Light SGN-LED84-DI-T8-UNV-850 46 Watt 84 Inch LED T8 Sign Tube Lamp Retrofit 5000K
    Specifications
    • Wattage: 46 Watt
    • Life: 70,000 hours
    • Lumens: 4,600
    • Technology: LED - Retrofit Kit
    • CRI: >80
    • Length: 81.18"
    • Voltage: Multivolt 120V-277V
    $86.99
    PART# SGN-LED84-DI-T8-UNV
    MOQ: 1
  7. Main Image Neptun Light SGN-LED96-DI-T8-UNV-850 52 Watt 96 Inch LED T8 Sign Tube Lamp Retrofit 5000K
    Specifications
    • Wattage: 52 Watt
    • Life: 70,000 hours
    • Lumens: 5,200
    • Technology: LED - Retrofit Kit
    • CRI: >80
    • Length: 93.18"
    • Voltage: Multivolt 120V-277V
    $100.00
    PART# SGN-LED96-DI-T8-UNV
    MOQ: 1
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The DI-88 Series of LED direct/indirect T8 sign tube lamps were designed for the purpose of retrofitting existing T12 lighting systems. Available in a variety of wattages and color temperatures, these self-ballasted lamps work in most commonly used T8 and T12 fixtures, making installation quick and easy.


Neptun's DI-88 Series of T8 tube retrofit lamps are available in seven different wattage/length combinations, from 22 watts and 36 inches all the way up to 52 watts and 96 inches. Light is emitted at either 3500K, 4100K or 5000K color temperatures with a CRI greater than 80. Light lasts for at least 70,000 hours, making these lamps virtually maintenance-free for up to 15 years.


The LED tube lamps are constructed with an aluminum core for excellent thermal management. They also have double-sided optics for direct/indirect lighting systems, as well as a frosted lens for glare-free illumination. They are ETL/UL listed, FCC compliant, and backed by a five year warranty. 

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