---
product_id: 12863515
title: "KOR (Pack of 6) F13T5/CW - T5 Fluorescent 4100K Cool White - 13 Watt - 21\" Super Long Life Light Bulbs"
brand: "kor"
price: "VT17135"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/12863515-kor-pack-of-6-f13t5-cw-t5-fluorescent-4100k-cool
store_origin: VU
region: Vanuatu
---

# 20,000 hrs Life 900 Lumens Brightness 13W Power KOR (Pack of 6) F13T5/CW - T5 Fluorescent 4100K Cool White - 13 Watt - 21" Super Long Life Light Bulbs

**Brand:** kor
**Price:** VT17135
**Availability:** ✅ In Stock

## Summary

> 💡 Light Up Your Life with KOR's Super Long Life Bulbs!

## Quick Answers

- **What is this?** KOR (Pack of 6) F13T5/CW - T5 Fluorescent 4100K Cool White - 13 Watt - 21" Super Long Life Light Bulbs by kor
- **How much does it cost?** VT17135 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/12863515-kor-pack-of-6-f13t5-cw-t5-fluorescent-4100k-cool)

## Best For

- kor enthusiasts

## Why This Product

- Trusted kor brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Fit:** Designed in a sleek 21-inch tubular shape, these bulbs fit seamlessly into various fixtures.
- • **Cool White Clarity:** Transform your environment with a refreshing 4100K cool white light that enhances visibility.
- • **Eco-Friendly Choice:** With only 13 watts of power consumption, save on energy bills while being kind to the planet.
- • **Illuminate Your Space:** Experience the brilliance of 900 lumens, perfect for any indoor setting.
- • **Longevity Meets Efficiency:** Enjoy up to 20,000 hours of super long life, reducing the hassle of frequent replacements.

## Overview

The KOR F13T5/CW pack includes six 13-watt T5 fluorescent light bulbs, each measuring 21 inches in length. With a cool white color temperature of 4100K and an impressive lifespan of 20,000 hours, these bulbs provide efficient and bright illumination for indoor spaces.

## Description

KOR (Pack of 6) F13T5/CW - T5 Fluorescent 4100K Cool White - 13 Watt - 21" Super Long Life Light Bulbs

## Features

- F13T5/CW - Pack Of 6 Bulbs
- T5 Fluorescent - 13 Watt
- 21" Overall Length
- Cool White (4100K) Color
- 20,000 Hours - Super Long Life

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | KOR |
| Light Type | Fluorescent |
| Wattage | 13 watts |
| Bulb Shape Size | T5 1/2 |
| Incandescent Equivalent Wattage | 13 Watts |
| Light Color | Warm White |
| Voltage | 120 Volts |
| Unit Count | 6.0 Count |
| Color Temperature | 6500 Kelvin |
| Number of Items | 6 |
| Brightness | 900 Lumen |
| Shape | Tubular(T) |
| Material | copper |
| Model Name | K25674 |
| Connectivity Technology | Normal bulb |
| Indoor/Outdoor Usage | Indoor |
| Controller Type | Push Button |
| Power Source | Corded Electric |
| Color Rendering Index | 900 |
| Power Consumption | 13 Watts |
| Item Package Quantity | 1 |
| Light Source Type | Fluorescent |
| Item Weight | 12.8 ounces |
| Light Source Wattage | 13 Watts |
| Accepted voltage frequency | 100 to 120 Volts and 60 Hertz |
| Control Method | App |
| Average Life | 15000 Hours |
| White Brightness | 900 Lumens |
| Efficiency | Efficient |
| Manufacturer | KOR |
| UPC | 817300020528 |
| Part Number | K25674 |
| Package Dimensions | 21.25 x 2.25 x 1.5 inches |
| Item model number | K25674 |
| Is Discontinued By Manufacturer | No |
| Color | Cool White (4100k) |
| Finish types | Clear |
| Batteries Included? | No |
| Batteries Required? | No |
| Wattage | 13 Watts |

## Product Details

- **Brand:** KOR
- **Light Type:** Fluorescent
- **Wattage:** 13 watts
- **Bulb Shape Size:** T5 1/2
- **Incandescent Equivalent Wattage:** 13 Watts

## Images

![KOR (Pack of 6) F13T5/CW - T5 Fluorescent 4100K Cool White - 13 Watt - 21" Super Long Life Light Bulbs - Image 1](https://m.media-amazon.com/images/I/51yOuj6txqS.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: whats the difference between cool light, warm light and daylight????**
A: Warm white and soft white will produce a yellow hue, close to incandescents, while bulbs labeled as cool/bright white will produce a whiter light, closer to daylight and similar to what you see in retail stores.  The three primary types of color temperature for light bulbs are: Soft/warm White (2700K – 3000K), Cool/Bright White (3500K – 4100K), and Daylight (5000K – 6500K). The higher the Degrees Kelvin, the whiter the color temperature.  Typically, most people prefer Warm White (WW = 3000K) bulbs for their homes.

**Q: are 20 inch led fluorescent light tubes made?**
A: I'm not aware of a 20" bulb and a quick internet search didn't reveal any. I've found measurements misleading to an extent. You might measure your old bulb. It might actually be a 21" bulb. It seems to me that the pins are often included in, or at least partially included, in the total measurement.

**Q: is it slim?**
A: Yes they are very slim. I purchased them for an under cabinet/over counter light fixture.

**Q: Are the ends round?  I bought one that the ends were oval & they won’t fit.**
A: My ends are oval.

## Frequently Bought Together

- KOR (Pack of 6) F13T5/CW - T5 Fluorescent 4100K Cool White - 13 Watt - 21" Super Long Life Light Bulbs
- F8T5 Flourescent Light Bulbs - 12 inches Under Cabinet Bulb - Cool White 4100k 8 Watt Tube Bulb - Pack of 6
- KOR (Pack of 6) F8T5/CW - T5 Fluorescent 4100K Cool White - 8 Watt - 12" Super Long Life Light Bulbs

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**Shop now:** [https://www.desertcart.vu/products/12863515-kor-pack-of-6-f13t5-cw-t5-fluorescent-4100k-cool](https://www.desertcart.vu/products/12863515-kor-pack-of-6-f13t5-cw-t5-fluorescent-4100k-cool)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-21*