Reimagined Incandescent Glow

The GoodBulb F18LTT/4P/835/9IN Long Twin Tube CFL delivers clean, balanced 3500K illumination designed for comfortable environments that support clarity and productivity. Emitting a neutral white glow, this lamp enhances visual comfort with smooth, even light distribution. Its Long Twin Tube geometry and clear finish maximize lumen output while maintaining the elegant uniformity that architects and facility managers rely on.

Power and Versatility

Engineered for commercial performance, this 18-watt CFL delivers exceptional efficiency while producing dependable, high-quality light. Operating on 120–277V systems via compatible electronic ballasts, the F18LTT offers Instant-ON startup and reliable performance in offices, retail, education, healthcare, and task lighting systems. Its long 12,000-hour life reduces maintenance costs, keeping your fixtures shining longer with fewer replacements.

For the Love of Color

Featuring a CRI of 82, this lamp reproduces colors with clarity and consistency, enhancing interiors without distortion. The balanced 3500K color temperature highlights materials, textures, and finishes with precision—ideal for spaces where accurate, neutral-toned lighting supports productivity and comfort.

Rough Service CFL

Built with durable, high-quality components, this Long Twin Tube CFL withstands vibration, frequent switching, and demanding commercial environments. Its robust 2G11 4-pin base ensures a secure and reliable electrical connection, while precision tube construction ensures uniform brightness across the entire lamp.

Effortless Dimming

Designed for compatibility with dimmable systems using approved electronic ballasts, this CFL delivers smooth dimming performance ideal for offices, conference rooms, retail settings, and hospitality spaces. Instant Start technology ensures quick illumination without flicker when paired with the correct ballast.

Built to Last

Unlike lower-grade lamps built with cost-cutting components, GoodBulb delivers consistent reliability with high-quality phosphors, precision manufacturing, and engineered durability. Every element—from the electrodes to the glass envelope—is crafted for longevity and performance throughout the lamp’s life cycle.

Guardian of Prosperity

Switching to energy-efficient CFL and LED technology dramatically reduces operational costs. Replacing outdated incandescent or older fluorescents with GoodBulb’s high-efficiency lamps can reduce consumption and maintenance by up to 75%. Businesses operating long hours can save thousands in energy and HVAC costs over the product lifespan.

Xtreme Life Guarantee

With a 12,000-hour rated life, this lamp lasts significantly longer than incandescents and many older fluorescents. GoodBulb’s commitment to quality ensures consistent performance, backed by expert support and responsible recycling recommendations to reduce environmental impact.

Impactful Lighting

Choosing GoodBulb means investing in better light and a better world. Our products reduce energy waste, lower utility costs, and support sustainable practices. GoodBulb’s mission extends beyond lighting—each purchase contributes to providing clean solar light to communities without electricity. Light that saves money. Light that changes lives.