Low-profile design Ideal for Parking Garages
78W Replaces 250W MH Luminaires
100,000-hour LED lifespan based on IES LM-80 results and TM-21 calculations
Up to 25% Reduction in Fixture Count
Lock screw provided for pendant mount
View Technical Specs
Watts 78W
Color Temp 5100K (Cool)
Lumens 8,652
Efficacy 105 lm/W
Color Accuracy 74 CRI
L70 Lifespan 100,000 hours
Type Constant Current
120V 0.74A
208V 0.47A
240V 0.41A
277V 0.35A
Input Watts 83W

Weight: 18.2 lbs

Technical Specifications

GLED78 with Bi-Level Operation

Allows 33%-66%-100% output modes

Back Box

The ceiling backbox is perfect for adding sensors or making splices to the GLED™ family of products. Surface mounts over any shape box and covers unsightly stains or gaps. Five (1/2") conduit entries enable wiring directly from the back or through the sides using surface conduit.


The design of GLED78 is protected by patents pending in US, Canada, China, Taiwan and Mexico


Equivalent to 175W Metal Halide

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 Wet Locations. Covered Ceiling Mount Only.

DLC Listed

This product is on the Design Lights Consortium (DLC) Qualified Products List and is eligible for rebates from DLC Member Utilities.
DLC Product Code: P0000170Z

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


100,000-hour LED lifespan based on IES LM-80 results and TM-21 calculations


6x13W high-output, long-life LEDs

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 C78.377-2017.



7.4% at 120V, 17.2% at 277V

Power Factor

99.1% at 120V, 90.1% at 277V


3x26W Driver, Constant Current, Class 2, 100V-277V, 50/60 Hz, 6kv Surge Protection, 720mA, 100-277VAC 0.4 Amps.


Cold Weather Starting

Minimum starting temperature is -40°C (-40°F)

Maximum Ambient Temperature

Suitable for use in 40°C (104°F) ambient temperatures

Thermal Management

Superior heat sinking with integrated air-flow fins


Precision die-cast aluminum housing and door frame


Easy hanging plate with hooks for ceiling mount


Prismatic polycarbonate lens


Specular vacuum-metallized polycarbonate


High-temperature silicone


Formulated for high-durability and long lasting color

Green Technology

Mercury and UV-free. RoHS compliant components.


BUG Rating

B3 U3 G2

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