---
product_id: 5725560
title: "(Pack of 4) F13T5/CW 13-Watt T5 Fluorescent Cool White 4100K Super Long Life"
brand: "unique bulbs"
price: "€ 54.69"
currency: EUR
in_stock: true
reviews_count: 13
category: "Unique Bulbs"
url: https://www.desertcart.sk/products/5725560-pack-of-4-f13t5-cw-13-watt-t5-fluorescent-cool
store_origin: SK
region: Slovakia
---

# 12,000-hour super long life Instant On, zero wait lighting 13W power-efficient brilliance (Pack of 4) F13T5/CW 13-Watt T5 Fluorescent Cool White 4100K Super Long Life

**Brand:** unique bulbs
**Price:** € 54.69
**Availability:** ✅ In Stock

## Summary

> 💡 Light up your workspace, not your energy bill!

## Quick Answers

- **What is this?** (Pack of 4) F13T5/CW 13-Watt T5 Fluorescent Cool White 4100K Super Long Life by unique bulbs
- **How much does it cost?** € 54.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/5725560-pack-of-4-f13t5-cw-13-watt-t5-fluorescent-cool)

## Best For

- unique bulbs enthusiasts

## Why This Product

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

## Key Features

- • **Energy Smart:** Only 13 watts for powerful light with low energy consumption
- • **Instant Ambiance:** No warm-up delay with Instant On technology for immediate productivity
- • **Bright & Balanced:** Cool White 4100K color temperature for crisp, professional lighting
- • **Effortless Upgrade:** Direct-fit G5 mini bi-pin base for seamless replacement
- • **Long-Lasting Performance:** 12,000 hours of reliable illumination to reduce maintenance

## Overview

This pack of four F13T5/CW 13-Watt T5 fluorescent tubes delivers bright, cool white 4100K light with a long-lasting 12,000-hour lifespan. Featuring a G5 mini bi-pin base for easy installation and instant-on technology, these energy-efficient bulbs are perfect for professional environments seeking reliable, crisp illumination with minimal downtime.

## Description

F13T5/CW 13-Watt T5 Fluorescent Cool White 4100K Super Long Life

Review: Let there be light!!! - Working great. Love the light bulbs
Review: Awesome-Direct replacement for old fluorescent bulb - I was unsure but happily surprised when I found these. I was trying to resurrect an old fluorescent (under a shelf) fixture, and these were perfect. Direct replacement-perfect fit. So much brighter than the original type of bulb. Awesome.

## Features

- F13T5/Cool White Pack of 4
- 21" Straight T5 Fluorescent Tube
- 12,000 Life Hours, G5 Mini Bi-Pin Base
- 4100K
- 13 Watt

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CPN4YD6S |
| Accepted voltage frequency | 100 to 120 Volts and 60 Hertz |
| Average Life | 12000 Hours |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #23,806 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #126 in Fluorescent Tubes |
| Brand | Unique Bulbs |
| Bulb Base | G5.3 |
| Bulb Shape Size | T5 1/2 |
| Color | White |
| Color Temperature | 4000 Kelvin |
| Control Method | App |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,893) |
| Date First Available | December 6, 2023 |
| Efficiency | Baja |
| Finish types | White |
| Included Components | Bulb |
| Indoor/Outdoor Usage | Indoor |
| Item Weight | 9.1 ounces |
| Item model number | F13T5 |
| Light Color | white |
| Light Source Type | Fluorescent |
| Light Source Wattage | 13 Watts |
| Light Type | Fluorescent |
| Manufacturer | Unique Bulbs |
| Material | Glass |
| Model Name | F13T5 |
| Number of Items | 4 |
| Package Dimensions | 21.34 x 2.76 x 2.32 inches |
| Part Number | f13t5 |
| Power Consumption | 13 Watts |
| Power Source | Electric |
| Shape | Tubular(T) |
| Special Feature | Instant On |
| Special Features | Instant On |
| Specific Uses For Product | General Purpose |
| Style | Industrial |
| Unit Count | 4.0 Count |
| Voltage | 120 |
| Wattage | 13 Watts |

## Product Details

- **Brand:** Unique Bulbs
- **Bulb Shape Size:** T5 1/2
- **Light Type:** Fluorescent
- **Special Feature:** Instant On
- **Wattage:** 13 watts

## Images

![(Pack of 4) F13T5/CW 13-Watt T5 Fluorescent Cool White 4100K Super Long Life - Image 1](https://m.media-amazon.com/images/I/31IRDgsJooL.jpg)
![(Pack of 4) F13T5/CW 13-Watt T5 Fluorescent Cool White 4100K Super Long Life - Image 2](https://m.media-amazon.com/images/I/61Rr+XNln+L.jpg)

## Questions & Answers

**Q: my bulbs are 20 inches long, are these the same?**
A: The tube is 20 and 1/4 inches long, but counting the pins on both ends it's a total of almost 21 inches.  Check the full length of your fixture taking into account the extra amount for the pins.

**Q: are these bulbs made in china?**
A: Yes, according to the box in which the are packed.

**Q: What is the difference between f17t8 and f13t5??**
A: The length and the wattage of the bulbs are different.

**Q: What size starter would I need to use with this size tube?  Old one got lost.**
A: FS-4 STARTER

## Customer Reviews

### ⭐⭐⭐⭐⭐ Let there be light!!!
*by T***E on December 12, 2025*

Working great. Love the light bulbs

### ⭐⭐⭐⭐⭐ Awesome-Direct replacement for old fluorescent bulb
*by P***. on November 4, 2025*

I was unsure but happily surprised when I found these. I was trying to resurrect an old fluorescent (under a shelf) fixture, and these were perfect. Direct replacement-perfect fit. So much brighter than the original type of bulb. Awesome.

### ⭐⭐⭐⭐⭐ Replacement light tubes
*by M***N on January 13, 2026*

Works as advertised.

## Frequently Bought Together

- Unique Bulbs (Pack of 2) F13T5/CW 13-Watt T5 Fluorescent Cool White 4100K Super Long Life
- Unique Bulbs (Pack of 2 F8T5/CW 8W T5 12" Cool White 4100k Fluorescent Light Bulb 20,000hr

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**Shop now:** [https://www.desertcart.sk/products/5725560-pack-of-4-f13t5-cw-13-watt-t5-fluorescent-cool](https://www.desertcart.sk/products/5725560-pack-of-4-f13t5-cw-13-watt-t5-fluorescent-cool)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-03*