Advance Tabco
Advance Tabco FC-1-1818-X Wall Mounted Sink 18 in x 18 in, 304
- Silver
$790.99
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Antique Light Bulb Co.
Antique Light Bulb Co. GFT24DL 24W T4 2G11 Germicidal Bulb 20849
A 24 W UV-C germicidal lamp emitting 254 nm light with an 8,000-hour rated life and 2G11 four-pin base
- TypeGermicidal Bulbs
- Wattage24
- Life Time Hours8000
- 24W UV-C output at 254nm wavelength for effective germicidal action
- 8000-hour rated life reduces replacement frequency and maintenance
- Special outer glass absorbs lower wavelengths preventing ozone formation
- 2G11 four-pin base fits compatible germicidal fixtures directly
- Single T4 tube design delivers concentrated UV-C irradiance
UV-C Germicidal Bulb for Sterilisation
The Bulbamerica GFT24DL delivers 24 watts of UV-C output at 254 nm through a single T4 tube with a 2G11 four-pin base. It is intended for air, water or surface disinfection systems that require ozone-free operation. The special outer glass absorbs lower wavelengths to prevent ozone formation during use.
Practical Limits of UV-C Disinfection
Effectiveness drops sharply outside the 254 nm peak, so the lamp must match the fixture's spectral requirements exactly. The 8,000-hour rated life defines the replacement interval; output decays before visible failure. Ozone suppression is built into the glass, not an external filter, so the tube itself must remain intact.
Replaces 24 W 2G11 T4 Germicidal Lamps
This bulb is a direct swap for existing 24 W 2G11 single-tube models such as the 20849 reference. The upgrade is worth it when the current lamp has reached its rated hours or when ozone-sensitive environments demand the outer-glass absorption feature. It does not fit 2G7 or other base types.
Highlights
- 24W UV-C output at 254nm wavelength for effective germicidal action
- 8000-hour rated life reduces replacement frequency and maintenance
- Special outer glass absorbs lower wavelengths preventing ozone formation
- 2G11 four-pin base fits compatible germicidal fixtures directly
- Single T4 tube design delivers concentrated UV-C irradiance
Specifications
| Brand | Bulbamerica |
|---|---|
| Type | Germicidal Bulbs |
| Wattage | 24 |
| Life Time Hours | 8000 |
Questions about this item
Which wattage and base version of this germicidal bulb matches my fixture?
The bulb is a 24 W T4 lamp with a 2G11 4-pin base, so it fits fixtures designed for that exact wattage and base type.
What does the 254 nm output mean for actual disinfection performance?
At 254 nm the lamp delivers UV-C irradiance that inactivates microorganisms, and the outer glass suppresses ozone formation for safer operation.
How does the 2G11 interface limit the electrical and spectral characteristics in practice?
The 2G11 4-pin base connects to compatible electronic ballasts that drive the lamp at 24 W, maintaining the rated 254 nm output for the 8,000-hour life.
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