Replaces 250W MH high bays
Reduces energy consumption by 67%
100,000-hour LED lifespan
5-Year, No-Compromise Warranty
View Technical Specs
Watts 78W
Color Temp 5100K (Cool)
Lumens 11,311
Efficacy 125 lm/W
Color Accuracy 72 CRI
L70 Lifespan 100,000 hours
Type Constant Current
120V 0.82A
208V 0.52A
240V 0.45A
277V 0.4A
Input Watts 90W

Weight: 21.0 lbs

Technical Specifications

BAYLED78 with Bi-Level Operation

Allows 33%-66%-100% output modes


The design of the BAYLED™ is protected by patents pending in US, Canada, China, Taiwan and Mexico


Available accessories include protective polyshield and wire guards, replacement lens and doorframe, and an occupancy sensor. Click here to see all accessories.


Equivalent to 4 lamp T8 fixtures


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 luminaires and LED components have been tested by an independent laboratory in accordance with IESNA LM-79 and LM-80.

LED Characteristics


Three multi-chip, 26W high-output, long-life LEDs


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


11.83% at 120V, 9.66% at 277V

Power Factor

99.1% at 120V, 93.5% at 277V


Ambient Temperature

Suitable for use in 55°C (131°F) ambient temperatures

Thermal Management

Superior thermal management with external air-flow fins


Precision die-cast aluminum housing and door frame with 3-foot 600V power cord


Heavy-duty 3/4" NPS hook and 3 foot safety chain

Recommended Mounting Height

25 ft


Tempered glass


Specular vacuum metallized polycarbonate


High-temperature silicone


Formulated for high-durability and long lasting color

Green Technology

Mercury and UV-free. RoHS compliant components.

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