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Color: White


Replaces 250W MH high bays

Reduces energy consumption by 67%

100,000-hour LED lifespan

5-year warranty

LED Info

  • Watts:
  • Color Temp:
  • Color Accuracy:
  • L70 Lifespan:
  • Lumens:
  • Efficacy:
  • 78W
  • 5100K
  • 68 CRI
  • 100000
  • 7463
  • 84 LPW

Driver Info

  • Type:
  • 120V:
  • 208V:
  • 240V:
  • 277V:
  • Input Watts:
  • Constant Current
  • 0.82A
  • 0.52A
  • 0.45A
  • 0.4A
  • 89W


Weight: 21.0 lbs

Technical Specifications


  • BAYLED78 with Bi-Level Operation:
    Allows 33%-66%-100% output modes.
  • Patents:
    The design of the BAYLED™ is protected by patents pending in US, Canada, China, Taiwan and Mexico.
  • Accessories:
    Available accessories include protective polyshield and wire guards, replacement lens and doorframe, and an occupancy sensor. Click here to see all accessories.
  • Equivalency:
    Equivalent to 4 lamp T8 fixtures.
  • Buy American Act Compliance:
    RAB values USA manufacturing! Upon request, RAB may be able to manufacture this product to be compliant with the Buy American Act (BAA). Please contact customer service to request a quote for the product to be made BAA compliant.


  • UL Listing:
    Suitable for damp locations with cord and hook. Suitable for wet locations with 3/4" pendant stem. Covered ceiling mount only.
  • IESNA LM-79 & LM-80 Testing:
    RAB LED luminaries have been tested by an independent laboratory in accordance with IESNA LM-79 and LM-80, and have received the Department of Energy "Lighting Facts" label.

LED Characteristics

  • LEDs:
    Three multi-chip, 26W high-output, long-life LEDs.
  • Lifespan:
    100,000-hour LED lifespan based on IES LM-80 results and TM-21 calculations.
  • Color Consistency:
    7-step MacAdam Ellipse binning to achieve consistent fixture-to-fixture color.
  • Color Stability:
    LED color temperature is warrantied to shift no more than 200K in CCT over a 5 year period.
  • Color Uniformity:
    RAB's range of CCT (Correlated Color Temperature) follows the guidelines of the American National Standard for Specifications for the Chromaticity of Solid State Lighting (SSL) Products, ANSI C78.377.2011.


    • Drivers (3):
      Constant Current, 720mA, Class 2 with 6kV surge protection, 100-277VAC, 50/60 Hz.
    • THD:
      12.2% at 120V


    • Ambient Temperature:
      Suitable for use in 55°C (131°F) ambient temperatures.
    • Thermal Management:
      Superior thermal management with external air-flow fins
    • Housing:
      Precision die-cast aluminum housing and door frame with 3-foot 600V power cord.
    • Mounting:
      Heavy-duty 3/4" NPS hook and 3 foot safety chain.
    • Recommended Mounting Height:
      25 ft.
    • Lens:
      Tempered glass
    • Reflector:
      Specular vacuum metallized polycarbonate.
    • Gaskets:
      High-temperature silicone
    • Finish:
      Formulated for high-durability and long lasting color.
    • Green Technology:
      Mercury and UV free. RoHS compliant components. Polyester powder coat finish formulated without the use of VOC or toxic heavy metals.