Low Bay Unitized Distributor Pack

For areas that require vertical illumination and glare control at low mounting heights. Ideal for general open areas, retail spaces and aisles. Certain airborne contaminants can diminish integrity of acrylic. Refer to Acrylic Environmental Compatibility tables for suitable uses.


Rugged, heavy-duty, die-cast aluminum with white polyester powder finish. Electrical components horizontally opposed and heat-sinked to ballast housing for cooler operation. Integral splice box mounting flange ensures structural integrity.


Injection-molded, virgin acrylic lens and highly reflective, white polyester powder painted reflector. UV stabilized. Hinge and lens retainer latches facilitate tool-less removal for maintenance and cleaning. Continuously gasketed refractor and reflector inhibits entrance of outside contaminants.


Ballast: All ballasts are 100% factory tested. HPS: Constant wattage autotransformer. MH: 150-400W fixtures shipped within the U.S. require super CWA pulse start ballasts which are 88% efficient and EISA-legislation compliant (must specify SCWA option). CSA, NOM or INTL options required for probe start shipments outside the U.S.

Socket: Vertically oriented mogul base protected exclusionary "PINK" socket with copper alloy, nickel-plated screw shell and center contact. For use with O-rated, protected metal halide lamps only.


Pendant splice box: Removable cast-aluminum box slides on integral die-cast aluminum housing mounting flange and mounts to 3/4" pendant conduit prior to ballast housing installation. Matching wire access cover accepts RELOC® modular wiring. Complete assembly meets or exceeds UL 50- pound pull test.

Optic Mounting Four 8-32 zinc-plated, tri-lobular, thread-rolling screws are arranged concentrically around the lamp socket. 16 gauge, galvanized steel support ring with matching keyhole pattern for vibration-resistant mounting.

Product overview and specifications
Brand Name Lithonia Lighting
Environment Indoor
Product Type Hanger
Series HKM, TXD
Spec Sheets
A summary of the performance and other technical characteristics of the product.
File Type Document Title View
TXD-250-400M-A23_PDF View
Technical Files
Installation documents, building information models, etc.
File Type Document Title View
RJ5210087-TH-TE-TX-Series-Housing_pdf View
sck-kit-installation-instructions_pdf View
File Type Document Title View
Acrylic-Polycarbonate-Compatibility_pdf View
Download brochures, sell sheets, photometry files and other sales tools.