---
product_id: 184196189
title: "4 Pack T5 21 Inch LED F13T5WW LED Replacement Bulb F13T5 LED 9 Watts 920 Lumens Warm White 3000k 120V F13 T5 13 Watt Bulb"
brand: "bluex bulbs"
price: "€ 61.16"
currency: EUR
in_stock: true
reviews_count: 8
category: "Bluex Bulbs"
url: https://www.desertcart.sk/products/184196189-4-pack-t5-21-inch-led-f13t5ww-led-replacement-bulb
store_origin: SK
region: Slovakia
---

# 9W ultra-efficient power 920 lumens bright output Mercury-free eco-safe 4 Pack T5 21 Inch LED F13T5WW LED Replacement Bulb F13T5 LED 9 Watts 920 Lumens Warm White 3000k 120V F13 T5 13 Watt Bulb

**Brand:** bluex bulbs
**Price:** € 61.16
**Availability:** ✅ In Stock

## Summary

> 💡 Brighten smarter, live warmer — upgrade your lighting game today!

## Quick Answers

- **What is this?** 4 Pack T5 21 Inch LED F13T5WW LED Replacement Bulb F13T5 LED 9 Watts 920 Lumens Warm White 3000k 120V F13 T5 13 Watt Bulb by bluex bulbs
- **How much does it cost?** € 61.16 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/184196189-4-pack-t5-21-inch-led-f13t5ww-led-replacement-bulb)

## Best For

- bluex bulbs enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Friendly & Safe:** No mercury or hazardous gases—safe for your home and the planet.
- • **Plug & Play Easy Upgrade:** Direct 21-inch T5 replacement compatible with existing 120V ballasts—no rewiring needed.
- • **Built to Last 25,000 Hours:** Long-lasting LED lifespan means fewer replacements and less hassle.
- • **Cut Your Energy Bills in Half:** Uses just 9 watts to deliver 920 lumens—over 50% energy savings vs fluorescent.
- • **Warm White Glow with True Colors:** 3000K color temp and CRI 90 for cozy, natural lighting that enhances any space.

## Overview

This 4-pack of 21-inch T5 LED replacement bulbs offers a warm white 3000K light with 920 lumens brightness at just 9 watts each. Designed for 120V fixtures, these energy-efficient bulbs provide over 50% savings compared to fluorescent tubes, feature a high CRI of 90 for excellent color rendering, and last up to 25,000 hours. Mercury-free and ballast-compatible, they are an easy, eco-friendly upgrade for professional-grade indoor lighting.

## Description

120V Only Please make sure your fixture is 120V this will not work in a 12v fixture (witch most RV and trailers are 12V). (Pack of 4) F13T5/WW Warm White LED 920 Lumens, CRI: 90 120V Only Please make sure your fixture is 120V this will not work in a 12v fixture (witch most RV and trailers are 12V).

Review: Great replacement for fluorescent, just remember a couple of things - I'm happy with these as a direct replacement for under counter florescent lights in my rental. There's only 2 things to note. The first is obvious, but I missed it. Make sure you get the proper temperature. The ones I'm reviewing are warm white. That is sort of a yellowish white. I now know I meant to get warm white. That's my mistake and I'm living with it as I do not expect the seller or manufacturer to fix it especially after I took them out of the box before understanding this. The 2nd thing is there actually is a front/back to these since they are LED. There's a black strip across one edge that I'm assuming is the back of the LED strip inside the tube. This is fine as my fixtures point down. I just adjusted to make sure the black line was on the back side of the fixture. They definitely are a lot brighter and I think they'll last a lot longer than the fluorescent bulbs they replaced.
Review: It worked in my particular Fluorescent light fixture - I received a box of 4 of these LED replacement of Fluorescent lights. The desertcart box was damaged, but the LED bulbs survived and were ok. The fixture has both a 12 inch and 21 inch bulb to provide a wide light. I kept the Fluorescent 12 inch but replace the bad 21 inch Fluorescent with the LED replacements, and THEY WORKED together! I had previously bad experiences with Fluorescent replaced by LED, but this one worked fine for me. The 3000K color appears to match the existing 12 inch Fluorescent, which is good too.

## Features

- 120V: 120V Only Please make sure your fixture is 120V this will not work in a 12v fixture (witch most RV and trailers are 12V).
- Direct Replace 21'' T5 9W tubes Under- Cabinet Lights to get over 50% light and energy saving PLEASE NOTE. Direct replacement ballast compatible the ballast must work in order for this bulb to work
- Energy Saving Bulb. Enjoy this f13t5ww led replacement natural warm lighting without the high electric bills. This low 9W 21 inches LED tube uses less energy and endures longer, making it the perfect replacement Fluorescent tube to an light, Easy to install , Average Life of 25,000 Hours.
- Safe Alternative.. There's no need to worry if a bulb breaks or about having to recycle it. Unlike fluorescent bulbs and CFL Bulbs, these LED lights do not contain mercury and won't release any hazardous gases
- Ultra Bright Color 3000K, Warm White f13t5ww bulbs 21 inch (Pack of 4) F13T5/WW Warm White LED 920 Lumens, CRI: 90

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084SSDLFS |
| Additional Features | Energy Efficient |
| Best Sellers Rank | #217,138 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8,947 in LED Bulbs |
| Brand | Bluex Bulbs |
| Brand Name | Bluex Bulbs |
| Brightness | 920 Lumen |
| Bulb Shape Size | T5 1/2 |
| Color Rendering Index | 90 |
| Color Temperature | 3000 Kelvin |
| Connectivity Technology | Normal bulb |
| Control Method | App |
| Controller Type | Push Button |
| Customer Reviews | 4.4 out of 5 stars 424 Reviews |
| Indoor Outdoor Usage | Indoor |
| Light Color | Warm white |
| Light Source Operating Life | 25000 Hours |
| Light Source Type | Led |
| Light Source Wattage | 9 Watts |
| Light Type | Fluorescent |
| Material Type | copper |
| Number of Items | 4 |
| Power Consumption | 9 Watts |
| Shape | Tubular(T) |
| Special Feature | Energy Efficient |
| UPC | 850002901740 |
| Unit Count | 4.0 Count |
| Voltage | 120 Volts |
| Wattage | 9 watts |
| White Brightness | 920 Lumens |

## Product Details

- **Brand:** Bluex Bulbs
- **Light Type:** Fluorescent
- **Special Feature:** Energy Efficient
- **Wattage:** 9 watts
- **Bulb Shape Size:** T5 1/2

## Images

![4 Pack T5 21 Inch LED F13T5WW LED Replacement Bulb F13T5 LED 9 Watts 920 Lumens Warm White 3000k 120V F13 T5 13 Watt Bulb - Image 1](https://m.media-amazon.com/images/I/51qEiDXcOPL.jpg)
![4 Pack T5 21 Inch LED F13T5WW LED Replacement Bulb F13T5 LED 9 Watts 920 Lumens Warm White 3000k 120V F13 T5 13 Watt Bulb - Image 2](https://m.media-amazon.com/images/I/61WQSf5jh6L.jpg)

## Questions & Answers

**Q: Are these plug and play?**
A: Yes they are plug and play. There is no need to eliminate the ballast. In fact the ballast must be in working order for the bulbs to work.

**Q: Is this bulb dimmable?**
A: No

**Q: Bulb is a fraction larger than the old one. It doesn't fit into the fixture. I'm nervous to force it...**
A: I had a similar issue and for one fixture I had to shorten the contact pins with a grinder and it still required a bit more force to get the bulb installed.  I have had the same issue with 48" LED bulbs from other suppliers.  I don't understand why they don't seem to able to match the length of a fluorescent tube.

**Q: Our GE fixtures have an electronic ballast, will these bulbs work with it?**
A: We have an electronic ballast and the bulbs work with it It's not a GE however.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great replacement for fluorescent, just remember a couple of things
*by R***T on September 27, 2024*

I'm happy with these as a direct replacement for under counter florescent lights in my rental. There's only 2 things to note. The first is obvious, but I missed it. Make sure you get the proper temperature. The ones I'm reviewing are warm white. That is sort of a yellowish white. I now know I meant to get warm white. That's my mistake and I'm living with it as I do not expect the seller or manufacturer to fix it especially after I took them out of the box before understanding this. The 2nd thing is there actually is a front/back to these since they are LED. There's a black strip across one edge that I'm assuming is the back of the LED strip inside the tube. This is fine as my fixtures point down. I just adjusted to make sure the black line was on the back side of the fixture. They definitely are a lot brighter and I think they'll last a lot longer than the fluorescent bulbs they replaced.

### ⭐⭐⭐⭐⭐ It worked in my particular Fluorescent light fixture
*by B***G on October 17, 2023*

I received a box of 4 of these LED replacement of Fluorescent lights. The amazon box was damaged, but the LED bulbs survived and were ok. The fixture has both a 12 inch and 21 inch bulb to provide a wide light. I kept the Fluorescent 12 inch but replace the bad 21 inch Fluorescent with the LED replacements, and THEY WORKED together! I had previously bad experiences with Fluorescent replaced by LED, but this one worked fine for me. The 3000K color appears to match the existing 12 inch Fluorescent, which is good too.

### ⭐⭐⭐⭐⭐ exceeded my expectations
*by R***A on January 22, 2023*

I rarely write reviews, but felt compelled to this time. The light is warm as advertised, they immediately come on, and make no noise. So much better than the old CFLs. I almost bought the types of bulbs where you bypass the ballast, to get rid of the humming. To my surprise, there is almost no humming with these bulbs. Was is the CFLs themselves humming? Either way, a pleasant surprise. We will see how long they last, but I'm never going back to CFLs. As others pointed out, these were longer than the Siemens branded bulbs I removed. It wasn't a problem for my light fixtures, but you may need to grind down the terminals if they are too long for you.

## Frequently Bought Together

- 4 Pack T5 21 Inch LED F13T5WW LED Replacement Bulb F13T5 LED 9 Watts 920 Lumens Warm White 3000k 120V F13 T5 13 Watt Bulb
- (Pack of 4) LED Direct Replacement F8T5/WW - T5 - 5 Watt - 12" - 500 Lumens - Super Long Life Light Bulbs - by KOR (Warm White (3000K))

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-05*