T5 LED Bulbs Specifications: F13T5 LED replacement bulbs, Length: 20.35inches (517mm), excluding the pins., Wattage: 9 Watts, CCT: 5000K, lumens: 950, CRI 80+, G5 bi-pin base. The T5 LED replacement bulb is designed to work with your existing ballast to replace fluorescent tubes. Ensure that your ballast is functional at both ends before installation.Please measure the available installation space in your fixture before purchase to ensure proper fit. Easy Installation: Each end features two pins, allowing you to simply plug it into the socket and twist to secure. With its straightforward installation process, this LED bulb will quickly brighten up your home.This is a T5 LED tube that must be used with an electronic ballast. Do NOT connect directly to 110V-120V AC power. Please verify your fixture's ballast type before installation. Energy Saving: These F13T5 LED replacements offer significant advantages over traditional fluorescent tubes. With lower heat output and a long lifespan of around 30,000 hours, they not only reduce energy consumption by up to 50%, but also minimize the need for frequent replacements. This makes them an ideal and cost-effective solution for upgrading your lighting system, ensuring both energy savings and reduced maintenance costs Lifespan: The T5 LED replacement bulb boasts a remarkable 30,000-hour lifetime, offering an exceptionally long service life. This extended longevity greatly reduces the frequency of bulb changes, providing a reliable and low-maintenance lighting solution Wide Application: These 21 inch F13T5 LED replacements are ideal for a variety of settings including offices, kitchens, counters, and cabinets, offering a modern and energy-efficient lighting solution that fits seamlessly into existing fixtures