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Fluorescent High Bay

By Lithonia Lighting

  • Overview
  • Specifications

Intended for use in retail stores, warehouses and manufacturing applications where high lumen package in a compact fixture is required. Recommended for mounting heights up to 30'. Certain airborne contaminants can diminish integrity of acrylic. Refer to Acrylic Environmental Compatibility tables for suitable uses.


Channel and louvers are formed from cold-rolled, 20-gauge steel. Designed for simple servicing, louver assembly hinges remain attached and hinge down providing easy access into the optical system. Convenient access plate located on the back of the the channel for easy access to wiring components.

Finish: High-gloss, baked white enamel finish. Five-stage, iron phosphate pretreatment ensures superior paint adhesion and rust resistance.


The Narrow Distribution (ND) includes a parabolic reflector system to provide high vertical and good horizontal illumination for aisle or rack lighting. The Wide Distribution (WD) is ideal for general area lighting at higher mounting heights or where widespread distribution is preferred. Both distributions are available with white straight blade louver for additional shielding and brightness control. Uplight component softens ceiling appearance to reduce the "cavern effect".


Thermally protected, resetting, Class P, HPF, Non PCB, UL listed, and Canadian Certified. A+ sound rated electronic ballast. AWN TFN or THHN wire used throughout, rated for required temperatures.

Sockets feature rotating collars and enclosed contacts.


A variety of mounting arrangements are available including tong hangers, aircraft cables, and stems. Suitable for mounting in continuous row or individual mounting. End caps include knockouts for through wiring and fixture attachment in row mounting applications.

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Size 4FT
Shape Rectangular
Light Source Fluorescent
Product Type High Bay
Environmental Listing Damp Location
Regulatory Listing CSA, UL
Fixture Wattage 28, 54
Voltage Rating 120-277, 347, 480
Color Black, Pewter, Silver, White
Mounting Type Suspended

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  • Suggested Replacement Products


  • Spec Sheets

    Document Type Document Title Description Updated View
    SPEC SHEET T5 direct with reflector T5 direct with reflector View
    SPEC SHEET T5 high bay with louver T5 high bay with louver 3/24/2021 View
    SPEC SHEET To be printed with all products containing acrylic material To be printed with all products containing acrylic material View
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  • Technical Documents (e.g. Instruction Sheets, MSDS, CAD)

    Document Type Document Title Description Updated View
    Acrylic Compatibility Acrylic-Polycarbonate-Compatibility Acrylic Compatibility Information View
    Installation Instructions Installation sheet WGMS5_MS8 .pdf MS8 Fluorescent High Bay – WGMS5 Installation Instructions View
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  • Replacement Parts

    Document Type Document Title Description Updated View
    Replacement Part Spec Sheet MS5HBAC.pdf MS5HBAC specification sheet View
    Replacement Part Spec Sheet MS5HBACF.pdf MS5HBACF specification sheet View
  • Confidential Documents

  • Marketing Material (e.g. Brochures, Sell Sheets, FAQs, )

  • Need Product Assistance? (e.g. How to Buy, Technical Support, Warranty)

    How to Buy

    Acuity Brands lighting and controls products are primarily sold through a network of agents and distributors across North America,
    as well as at more than 100 showroom or international locations and several online retailers.

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    Technical Support

    Acuity Brands is dedicated to providing outstanding technical support. Please click on the appropriate link below, or feel free to
    call us at 1.800.705.SERV (7378).

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    Please click on the appropriate link below to learn more about Acuity Brands terms & conditions and product warranty options.

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