SPEC-BEAM™ Full-sided Fluorescent High Bay

Ideal for use in retail, industrial, commercial, gymnasium and warehouse environments where 400W-1000W fixtures would be considered. Provides a wide variety of photometric distributions and lamp combinations, each designed specifically for applications ranging from large open areas to very tall and narrow spaces. Certain airborne contaminants can diminish integrity of acrylic. Refer to Acrylic Environmental Compatibility tables for suitable uses.


Channel, ends and socket brackets are manufactured from 22-gauge cold-rolled steel. Riveted and screwed assembly. Tool-less ballast and wiring access. Optional heavy-gauge steel or all aluminum construction also are available.

Lamp shielding options are provided with a 22-gauge premium polyester powder coat finish door frame with two painted hinges and two painted opposing rotary cam latches. Lenses are held in place with lens clips.

Standard high-gloss white baked enamel, pre-treated with a 5-stage iron phosphate system. Optional premium polyester powder coat finish, utilizing a 7-stage pretreatment process of iron phosphate, a non-chromium sealer and a de-ionized water rinse to provide superior adhesion and corrosion resistance.


Reflectors are precision-formed, high performance, 95% total reflectance, segmented optics utilizing premium specular aluminum warranted for 25 years.


Ballasts are electronic, energy-saving, thermally protected, Class P, HPF, non-PCB, Sound Rating A, UL/CSA Certified where applicable and comply with Federal Ballast Law (Public Law 100-357, 1988). UL Listed wire, rated for required temperatures, used throughout.

Lamps are secured with rotary locking lampholders for ease of re-lamping and to minimize disconnection due to vibration or incidental contact. Factory-installed lamps are available in various CRI ratings, temperature colors and rated life.


May be suspended with aircraft cable or chain hangers.

Product overview and specifications
Brand Name Lithonia Lighting
Color Clear
Color Rendering Index 80
Control Occupancy Sensor
Correlated Color Temperature 3000 K, 3500 K, 4100 K
Environment Indoor
Light Source Fluorescent
Product Type High Bay
Series FGB14, FGB164, FGB168, FGB18, FGB24, FGB24, FGB28, FGB324, HBBS
Voltage Rating HVOLT, MVOLT
Spec Sheets
A summary of the performance and other technical characteristics of the product.
File Type Document Title View
FGB-HL-T5HO_pdf View
FGB-HL-T8_pdf View
FGB-T5HO_pdf View
FGB-T8_pdf View
Technical Files
Installation documents, building information models, etc.
File Type Document Title View
File Type Document Title View
Acrylic-Polycarbonate-Compatibility_pdf View
Download brochures, sell sheets, photometry files and other sales tools.