1. Introduction
This manual provides instructions for the safe and efficient use of your Utilitech CFL 75-W Equivalent Daylight T5 CFL Flood Light Bulb. This compact fluorescent lamp (CFL) is designed to provide bright, daylight-colored illumination while being energy-efficient. It uses 27 watts to produce 1250 lumens of brightness and has an average life of 10,000 hours. This bulb features a 4-pin base and is intended for indoor use in compatible fixtures.
2. Safety Information
Please read and understand all safety instructions before installing or using this product. Failure to follow these instructions may result in electric shock, fire, or other hazards.
- Risk of Electric Shock: Always turn off power to the fixture at the circuit breaker or fuse box before installation, removal, or inspection.
- Do not use this bulb with dimmers unless specifically rated for CFL dimming. This bulb is not designed for use with dimmers.
- Do not use in totally enclosed fixtures as this may shorten bulb life.
- Do not use where directly exposed to water. This bulb is for indoor use only.
- If the bulb breaks, ventilate the room for 15 minutes. Carefully collect all broken glass and visible powder using stiff paper or cardboard. Do not use a vacuum cleaner. Place materials in a sealed plastic bag and dispose of according to local regulations.
- This bulb contains mercury. Dispose of properly according to local, state, and federal laws. Visit www.epa.gov/cfl/recycling-and-disposal-cfls for more information.
3. Setup and Installation
Follow these steps to properly install your CFL bulb:
- Turn off power: Ensure the power to the fixture is completely off at the circuit breaker or fuse box before beginning installation.
- Remove old bulb (if applicable): Allow the old bulb to cool completely before removing it.
- Inspect fixture: Verify that your fixture is compatible with a 4-pin base T4 CFL bulb and the specified wattage (27W).
- Install new bulb: Carefully align the 4 pins of the Utilitech CFL bulb with the corresponding slots in the fixture's socket. Gently push the bulb into the socket until it is firmly seated. Do not force the bulb.
- Restore power: Once the bulb is securely installed, restore power to the fixture at the circuit breaker or fuse box.

Figure 1: The Utilitech CFL 75-W Equivalent Daylight T5 CFL Flood Light Bulb. This image shows the bulb's four fluorescent tubes and its 4-pin base, which is designed for specific compatible fixtures.
4. Operating Instructions
This Utilitech CFL bulb operates like a standard light bulb once installed in a compatible fixture.
- Turning On/Off: Use the wall switch or fixture switch connected to the bulb to turn the light on or off.
- Warm-up Time: CFL bulbs may take a short period (typically a few seconds to a minute) to reach full brightness, especially in colder environments.
- Frequent Switching: While durable, frequent on/off cycling can slightly reduce the lifespan of CFL bulbs. For best longevity, use in applications where the light will remain on for longer periods.
5. Maintenance
The Utilitech CFL bulb requires minimal maintenance.
- Cleaning: Ensure the power is off and the bulb is cool before cleaning. Wipe the bulb gently with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- Replacement: Replace the bulb when it reaches the end of its operational life (approximately 10,000 hours) or if it fails prematurely. Always turn off power before replacing.
- Disposal: Due to mercury content, dispose of the bulb responsibly. Refer to Section 2 for disposal guidelines.
6. Troubleshooting
If your Utilitech CFL bulb is not functioning as expected, refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up. |
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| Bulb flickers or hums. |
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7. Specifications
Key technical specifications for the Utilitech CFL 75-W Equivalent Daylight T5 CFL Flood Light Bulb:
| Feature | Detail |
|---|---|
| Brand | Utilitech |
| Model Number | gfsfsh-921 |
| Light Type | CFL (Compact Fluorescent Lamp) |
| Wattage | 27 watts |
| Incandescent Equivalent Wattage | 75 Watts |
| Brightness | 1250 Lumens |
| Light Color | Daylight White |
| Bulb Shape Size | T4 |
| Bulb Base | G5.3-4.8 (4-pin) |
| Voltage | 120 Volts (Accepted: 100 to 120 Volts and 60 Hertz) |
| Average Life | 10,000 Hours |
| Indoor/Outdoor Usage | Indoor |
| Material | Copper |
| Item Weight | 4 ounces (0.25 Pounds) |
| Product Dimensions | 9.9 x 6.25 x 1.25 inches |
| UPC | 822985518475 |
8. Warranty and Support
For specific warranty information, please refer to the product packaging or contact Utilitech customer support directly.
If you have any questions or require assistance with your Utilitech CFL bulb, please contact Utilitech customer service. Contact details are typically available on the product packaging or the official Utilitech website.





