Introduction
Welcome to the user manual for your Bulbrite LED Filament ST18 Nostalgic Thread Edison Light Bulb. This manual provides essential information for the safe and effective use of your new light bulb, including installation instructions, operational guidelines, maintenance tips, and troubleshooting advice. Please read this manual thoroughly before installation and retain it for future reference.
Product Overview
The Bulbrite LED Filament ST18 bulb combines vintage aesthetics with modern LED technology. Designed to replicate the classic Edison bulb, it features an antique-tinted glass and visible LED filaments that emit a warm, inviting glow. This bulb is fully dimmable, allowing you to adjust the light intensity to suit any mood or setting. Its durable construction and 'WET Rated' designation make it suitable for both indoor and outdoor applications.

A close-up view of the Bulbrite LED Filament ST18 Nostalgic Thread Edison Light Bulb, showcasing its antique-tinted glass and visible LED filaments.
Specifications
| Feature | Detail |
|---|---|
| Model Name | Nostalgic Thread Edison |
| Bulb Type | LED Filament |
| Bulb Shape Size | ST18 |
| Base Type | E26 (Medium Screw Base) |
| Wattage | 5 Watts (40W Incandescent Equivalent) |
| Brightness | 450 Lumens |
| Color Temperature | 2200 Kelvin (Warm White) |
| Color Rendering Index (CRI) | 80 |
| Voltage | 120 Volts |
| Lifespan | 15,000 Hours |
| Dimmable | Yes, fully dimmable |
| Usage Environment | Indoor/Outdoor (WET Rated) |
| Material | Glass |
| Dimensions | 5"W x 5.75"H |
Setup (Installation)
- Safety First: Before installing or replacing any light bulb, ensure the power to the fixture is turned off at the circuit breaker or wall switch.
- Inspect the Bulb: Carefully remove the bulb from its packaging. Inspect it for any visible damage. Do not install a damaged bulb.
- Screw into Fixture: Gently screw the bulb into any compatible E26 (medium screw base) light fixture. Turn clockwise until snug, but do not overtighten.
- Restore Power: Once the bulb is securely installed, restore power to the fixture.
This bulb is designed for easy installation in a variety of fixtures, including portable lamps, ceiling fixtures, chandeliers, and pendants.
Operating
Operating your Bulbrite LED Filament ST18 bulb is straightforward:
- Turning On/Off: Use the standard wall switch connected to your light fixture to turn the bulb on or off.
- Dimmability: This bulb is fully dimmable and compatible with most dimmer switches. To adjust brightness, use your existing dimmer control. Ensure your dimmer is compatible with LED bulbs for optimal performance.
- Indoor/Outdoor Use: The bulb is WET rated, making it suitable for use in outdoor fixtures exposed to water, as well as all indoor applications.

An example of the Bulbrite LED Filament ST18 bulbs integrated into a modern chandelier, providing warm ambient lighting in a spacious living area.
Maintenance
The Bulbrite LED Filament ST18 bulb requires minimal maintenance due to its long lifespan and durable design.
- Cleaning: Before cleaning, always ensure the power to the fixture is off and the bulb has cooled down. Wipe the bulb gently with a soft, dry cloth. Do not use liquid cleaners or abrasive materials, as they may damage the bulb's finish or internal components.
- No User-Serviceable Parts: This light bulb contains no user-serviceable parts. Do not attempt to disassemble or repair the bulb.
Troubleshooting
If you encounter issues with your Bulbrite LED Filament ST18 bulb, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up | No power to fixture; Bulb not screwed in properly; Bulb has reached end of life | Check power switch and circuit breaker; Ensure bulb is securely screwed into socket; Replace bulb if it has exceeded its expected lifespan. |
| Bulb flickers or hums | Incompatible dimmer switch; Loose connection; Voltage fluctuations | Ensure dimmer is LED-compatible; Tighten bulb in socket; Consult an electrician if voltage issues persist. |
| Bulb does not dim properly | Incompatible dimmer switch; Dimmer not designed for LED loads | Replace with an LED-compatible dimmer switch. |
Warranty and Support
This Bulbrite LED Filament ST18 Nostalgic Thread Edison Light Bulb is covered by a 5-year limited warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For warranty claims, technical support, or any questions not addressed in this manual, please contact Bulbrite customer service. Refer to the Bulbrite official website or product packaging for the most current contact information.

The official Bulbrite brand logo, featuring the company name and tagline 'turn life on'.





