2′ × 4′ UV-C air purifying LED ceiling troffer
The standard drop-ceiling replacement. Our 2×4 UV-C troffer slides into an existing grid slot — no construction, no ductwork — and pairs LED downlighting with a sealed 275 nm UV-C air disinfection chamber that runs while the room is in use.
Confidence LED™ 2×4 at a glance.
- One-for-one swap with the troffer already in your ceiling
- Largest air-handling capacity in the family
- Ideal for classrooms and open offices with sustained occupancy
| Form factor | 2′ × 4′ recessed troffer for standard commercial ceiling grid |
|---|---|
| Installation | Drop-in retrofit — swaps one-for-one with an existing 2×4 troffer |
| Typical coverage | Larger rooms; commonly 1 fixture per ~100 sq ft of floor area |
| Germicidal wavelength | 275 nm UV-C LED (peak germicidal range) |
| UV-C chamber | Fully sealed and enclosed — no UV exposure to occupants |
| Air changes per hour | Designed for 4–6 ACH in a typical room (full air volume every 10–15 min) |
| Operation | Continuous, 24/7, with the room occupied |
| Downlighting | Energy-efficient LED, dimmable, optional circadian settings |
| Controls | Motion-sensor auto-on, adjustable fan speed, optional mobile app control |
| Service | Maintenance-indicator light; long-life LEDs measured in years, not months |
| Sizing rule of thumb | Roughly one fixture per 100 sq ft, adjusted for occupancy density |
| Detailed electrical specs | Wattage, CFM, and lumen values issued on the spec sheet with your quote |
Where this fixture is typically installed.
Confidence LED™ 2×4 FAQs.
Will the 2×4 UV-C troffer fit my existing ceiling?
If your ceiling already uses standard 2′×4′ lay-in troffers, the fixture drops into the same grid opening. No grid modification, ducting, or construction is required — most rooms are swapped in minutes by an electrician.
How many 2×4 fixtures does a classroom need?
We size fixtures per room, starting at roughly one fixture per 100 sq ft and then adjusting for occupancy density and ceiling height. A typical 900 sq ft classroom lands in the range where existing troffer positions are already close to correct.
Is UV-C safe with people in the room?
Yes. The UV-C LEDs sit inside a sealed internal chamber, so germicidal light never reaches skin or eyes. Only clean air leaves the fixture, which is why the system can run continuously while a room is occupied — unlike UV robots that require an empty room.
Does UV-C kill COVID-19 and other airborne viruses?
UV-C in the 275 nm germicidal range damages the RNA and DNA of airborne pathogens — including coronaviruses such as SARS-CoV-2, along with bacteria, mold, and fungal spores — so they can no longer replicate or cause infection as air passes through the chamber.
How is this different from a HEPA air purifier?
HEPA traps particles in a filter that must be changed and can re-release captured organisms during service. UV-C inactivates pathogens as air passes through, and because the system is built into the ceiling light there is no floor unit, no ductwork, and no filter replacement cycle.
Other UV-C air disinfection fixtures in the family.
- Confidence LED™ 2′×2′ UV-C TrofferA compact 2×2 UV-C LED ceiling troffer for exam rooms and treatment rooms — continuous air disinfection of airborne viruses and bacteria. Specs and FAQs.
- Confidence LED™ Linear UV-C Pendant4′ and 8′ linear UV-C LED strip and pendant fixtures for open ceilings — continuous air disinfection for open-plan offices, retail, and restaurants.
- Assurance UV-C Wall SconceWall-mounted UV-C air cleaning sconce for corridors, lobbies, and rooms without a ceiling grid — continuous airborne pathogen control with occupants present.
- Confidence LED™ Over-Bed UV-C UnitA low-profile over-bed UV-C air purifying fixture for patient rooms and assisted living bedrooms — quiet, dimmable, and safe to run continuously overnight.