Bell 38W 4 Pin Square Light Bulb - White

'840' refers to the color temperature, indicating a Cool White light with a CRI (Color Rendering Index) of 80 and a color temperature of approximately 4000 Kelvin.

Standard 2D fluorescent lamps with a 4-pin cap are typically not dimmable unless specified otherwise by the manufacturer and used with a compatible dimmable ballast. This model is generally intended for non-dimmable applications.

While specific lifespan varies with usage, Bell 2D compact fluorescent lamps are designed for long-term use, offering significant hours of operation compared to traditional bulbs.

No, this bulb requires a fixture specifically designed for the GR10Q 4-pin cap. It will not fit standard E27 screw or B22 bayonet sockets.

Yes, compact fluorescent lamps (CFLs) like this one are designed to be more energy-efficient than older incandescent lighting technologies.

Its bright, cool white light makes it suitable for general commercial and domestic applications, including offices, kitchens, bathrooms, workshops, and retail spaces where good visibility is important.

Ensure the bulb is correctly seated in the GR10Q holder. Check that the fixture is receiving power and the switch is functional. If the issue persists, the bulb may be faulty or the fixture's starter/ballast may need inspection.

Flickering can sometimes indicate a loose connection or an aging ballast/starter in the fixture. Try reseating the bulb. If flickering continues, consider checking or replacing the fixture's internal components.

This often suggests a problem with the fixture's ballast or starter. Consult a qualified electrician to inspect and service the light fixture.