New Open-Style Upper-Room UV C Luminary Offers Greater Infection Control, Lower Costs in Tall Ceilings

Press Release - January 31, 2022

New Open-Style Upper-Room UV C Luminary Offers Greater Infection Control, Lower Costs in Tall Ceilings

These fixtures are ideal against droplet nuclei generated by coughing, sneezing, or talking as this expelled air rises to the upper area of a space where it is exposed to UV-C energy and infectious agents are inactivated. With UV-C upper-room luminaries in place, the UVGI energy disrupts the RNA/DNA in viruses and the DNA in bacteria to prevent a pathogen from replicating and spreading infection.

The GLO, which stands for Germicidal Light Overhead (GLO), provides upper-room UV C disinfection treatment solutions for spaces ranging from 150 to 1,500-square feet. The new additions to the GLO family, the open-style upper room luminaries, are offered in two models:

  • GLO™ 900-OF, which treats about 900 square feet, and
  • GLO™ 1500-OF, which treats about 1,500-square feet of space.

Like the GLO family’s three baffled or louvered-type luminaries—ideal for rooms with ceilings at least 12-feet high—the new Open-style units use a parabolic reflector to optimize the germicidal UV-C output of the fixture. The traditional baffle system is replaced by an adjustable extended “director” on the bottom of the fixture, which protects room occupants from stray UV-C.


Both types of GLO fixtures—Open and Louvered—offer excellent infection control capabilities by boosting UVGI output via an exclusive, computer-designed, high spectral, parabolic, aluminum reflector system that significantly reduces internal UV energy losses.

The open design of the GLO upper-room UV-C luminaries allow for a wide field of UVGI far above occupants’ heads. This makes the unit highly effective inactivating pathogens in the upper-air space.

The new open fixture can be easily installed anywhere to inactivate airborne viruses, bacteria, and mold spores. It is designed to mitigate the risk of nosocomial infections in locations with high ceilings, including high-bay warehouses, cafeterias, gyms, multipurpose rooms, museums, and other similar building types.

According to the manufacturer, the new GLO upper-air UV Fixture exceeds the performance guidelines established by the U.S. Department of Health and Human Services and the Centers for Disease Control and Prevention (CDC) for hospital and healthcare applications. The GLO open fixture is pending ETL approval and offers a three-year fixture and one-year lamp warranty.


Upper-room UV-C systems (also known as upper-air) have been used to control airborne infectious diseases in high-traffic areas and where people congregate since the 1940s. Upper-room UV-C fixtures utilize the natural rise-and-fall of convection or mechanical air currents to lift airborne infectious agents overhead, where they are exposed to UV-C irradiation and inactivated.

Airborne droplets containing infectious agents can remain in room air for at least three hours[1]. Operating 24/7/365, UV-C and upper-room germicidal is a well-established technology that has proven effective as a public health intervention to prevent the spread of airborne diseases [2,3].

The GLO upper-room UV C fixture series from UV Resources uses an exclusive, parabolic reflector system to boost UVGI output and maximize germicidal protection for tall spaces.


Industry experts recommend that upper‑room UV‑C fixtures remain operational whenever people are present. For example, in a hospital waiting room, the upper-room UV‑C fixture would remain active 24/7/365, whereas in a commercial office board room, the fixture could be turned off at night when workers are not present. Similar to other UV‑C fixtures, lamps in upper‑room emitters should be changed after 9,000 hours of use.


PRODUCT GLO™ 1500-OF GLO™ 900-OF GLO™ 310 GLO™ 225 GLO™ 150







Coverage ±1500 sq. ft. ±900 sq. ft. ±310 sq. ft. ±225 sq. ft. ±150 sq. ft.
Part Number P/N 41825002 P/N 41825000 P/N 41824002 P/N 41824000 P/N 41824001
Electrical 120-277V
50/60Hz, 1P
50/60Hz, 1P
50/60Hz, 1P
50/60Hz, 1P
50/60Hz, 1P
Lamp Watts 36 Lamp Watts 25 Lamp Watts 36 Lamp Watts 25 Lamp Watts 8 Lamp Watts
Fixture UV Output
(Radiant Flux)†
6.25* watts
(625 mW)
3.71 watts
(372 mW)
1.21 watts
(121 mW)
.71 watts
(71 mW)
.35 watts
(35 mW)
Fixture Height 4.40″ 4.40″ 4.40″ 4.40″ 4.40″
Fixture Depth 19.84″ 19.84″ 6.40″ 6.40″ 6.40″
Fixture Width 35″ 23.25″ 35″ 23.25″ 14.25″

†Tested by an independent laboratory – total radiant power from all directions incident on an infinitesimal sphere.


The GLO™ upper-room UV-C disinfection fixture series from UV Resources now includes two new open-style luminaries designed to irradiate air in occupied spaces with high ceilings (12-feet and taller). The GLO “open” fixtures for tall spaces direct UV energy upward and outward to create an intense zone of ultraviolet germicidal irradiation (UVGI) or UV-C in the upper air. At the same time, occupants can safely go about their business in the lower portion of a room. The GLO series offers affordable treatment solutions for spaces ranging from 150- to 1,500-square feet. Fixtures have been independently tested for safety and UV output. For more information, call 877.884.4822; or visit

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UV Resources helps facility managers disinfect moving airstreams, interrupt the transmission of airborne infectious diseases, and kill microbial contaminants that impede HVAC efficiency. The founders of UV Resources pioneered the application of UV-C energy in HVAC equipment nearly 25 years ago. Today, the company operates a comprehensive manufacturing and distribution network to supply market-leading UV-C solutions around the world. For more information, call 877.884.4822; or visit

For editorial assistance, contact Joel Williams at 708.227.1095 or e-mail: [email protected].

Image Gallery






Open upper-room UVGI Infographic

[1] Van Doremalen, N., Bushmaker, T., Morris, D. H., Holbrook, M. G., Gamble, A., Williamson, B. N., … & Munster, V. J. (2020). Aerosol and surface stability of SARS-CoV-2 as compared with SARS-CoV-1. New England journal of medicine, 382(16), 1564-1567. Retrieved from
[2] Nardell & Nathavitharana (2019) Nardell E, Nathavitharana R. Air disinfection in measles transmission hotspots. Lancet. 2019;394(10203):1009–1010. Retrieved from
[3] Mphaphlele et al. (2015) Mphaphlele M, Dharmadhikari AS, Jensen PA, Rudnick SN, Van Reenen TH, Pagano MA, Leuschner W, Sears TA, Milonova SP, Van der Walt M. Institutional tuberculosis transmission. controlled trial of upper room ultraviolet air disinfection: a basis for new dosing guidelines. American Journal of Respiratory and Critical Care Medicine. 2015;192(4):477–484. Retrieved from