KOR F13T5WW 21-Inch Under-Counter Fluorescent Tubes — 13W 3000K Warm White, Pack of 6

Bright, reliable under-cabinet lighting

Refresh your cabinet lighting with the KOR F13T5WW 21-inch tubes. Engineered for compact under-counter fixtures, these 13-watt tubes emit a steady warm glow at 3000K, helping kitchens, home offices, and workshop spaces feel inviting without overpowering the room.

Product highlights

• 21-inch length fits most under-cabinet fixtures for a clean, seamless look
• 13-watt energy efficiency helps maintain lower power usage while delivering solid brightness
• Warm white color (3000K) creates a welcoming, cozy atmosphere
• Long service life up to 20,000 hours reduces replacement frequency
• Pack of 6 tubes provides convenient stocking and future replacements
• Designed for reliable, steady performance in tight cabinet spaces

In real-world use, many households notice clearer countertops, easier preparation tasks, and improved task visibility thanks to uniform illumination. Results can vary by fixture and room, but this 21-inch option is built to deliver a dependable lighting upgrade.

Smart design for easy replacement

• High-hour longevity supports fewer maintenance cycles
• Six-pack simplifies inventory and future replacements
• Consistent output helps maintain steady brightness across sessions

What to expect in your space

• Even illumination across countertops and work surfaces
• Warm ambiance that complements daily activities and evening routines
• Low heat emission suitable for enclosed cabinet environments
• Reliable performance across a range of room temperatures

Installation and compatibility

These tubes are designed for fixtures that accept F13T5/WW tubes and are a practical, long-lasting upgrade for under-cabinet lighting. Always ensure power is off before replacement and verify fitment with your specific fixture model.