NuWatt 4” foot T5 LED bulbs can function with both ballast-compatible (Type A) or ballast-bypass (Type B) operation, NuWatt 4ft T5 LED Tube Lights are Type A+B hybrids that work perfectly with or without a ballast and with single or dual-end powering. Install as a plug-and-play F54T5 fluorescent replacement with your existing ballast, or direct-wire these 4K LED tubes with a ballast-bypass configuration, eliminating the need for ballast replacements as they inevitably will reach their end-of-life. Plus, each G5 mini bi-pin T5 LED bulbs super bright 3200 Lumens of crisp 4000K cool white light, perfectly promoting safety and productivity in commercial, industrial and residential settings, while reducing your energy consumption by up to 60% compared to traditional T5 fluorescent bulbs. And its shatter-resistant lens with polyester (PET) film covering ensures even light distribution, eliminating harsh glare and providing comfortable illumination for workshops and garages to offices, basements, schools, retail stores, storage rooms, parking garages and any environment that benefits from dependable damp-location rated T5 LED tube lighting. Additionally, Nuwatt commercial grade T5 LED Tube 4000K Type A/B Hybrid only consumes 24W of power, is UL listed for safety, and is compatible with universal 120–277 VAC electrical configurations, ensuring a smooth and worry-free installation. Backed by a 5-year warranty and online/phone support, you can be confident in the quality and longevity of your T5 LED Tube Light Bulb investment.