T521_840_LED_product T521_840_LED_052622

21 in. 13W Equivalent Cool White (4000K) G5 Base (T5 Replacement) LED Linear Tube

SKU: T521/840/LED


Feit Electric’s 13-watt Equivalent Direct Replacement (Type A) Non-Dimmable Linear LED Tubes replace F13T5 or T5 fluorescent and LED tubes. They work with most existing electronic ballasts for quick and easy plug-and-play installation, with no rewiring necessary. Each Linear LED light produces 900 lumens, while using less energy than fluorescents. These versatile 4000K Cool White lights provide clean, neutral white light for both living and workspaces. Use them for multi-purpose lighting or task lighting wherever it is important to feel refreshed and ready to get things done. An ideal choice for most fluorescent linear tube replacement applications, use them in offices, garages, workspaces, warehouses, and more. T521/840/LED lights turn on instantly, offering flicker-free full illumination with no warmup time compared to fluorescent tubes. They are mercury-free, with a shatter-resistant coating for safe and easy disposal. Each high-quality bulb offers accurate color-rendering, for more vibrant, true-to-life colors. Lower heat emission extends the life of the tube and ends do not turn black or burn with age. The estimated energy cost is only $1.45 per year. Switch to Type A LED linear lights for your space and get up to 35,000 hours of superior light. That's 31.9 years based on 3 hours of daily use.


  • Works with most electronic ballasts, no rewiring is required
  • Shatter-resistant and mercury-free, no special disposal is required
  • Flicker-free, instant ON illumination at full brightness
  • 4000K Cool White, superior light quality with accurate color rendering (CRI: 80)
  • LED technology offers more lumens per watt, saving energy over fluorescents



Feit Electric

The products shown on this website are exemplary of Feit Electric products available for sale. Performance characteristics are indicative of expected performance and are subject to revision. Not all products are available for sale or resale in all areas. In particular, products regulated by the California Energy Commission (the "CEC") that are non-compliant are not available for sale and resale in California. Please contact a Feit Electric sales representative for products available for sale and resale in your state or country.