---
product_id: 38891921
title: "Sylvania 20890 - CF42DT/E/IN/841 - 42 Watt Triple Tube Compact Fluorescent Light Bulb, 4100K"
brand: "ledvance"
price: "€ 9.08"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/38891921-sylvania-20890-cf42dt-e-in-841-42-watt-triple-tube
store_origin: IE
region: Ireland
---

# 16,000 hours long lifespan 42W energy-efficient power 3200 lumens bright output Sylvania 20890 - CF42DT/E/IN/841 - 42 Watt Triple Tube Compact Fluorescent Light Bulb, 4100K

**Brand:** ledvance
**Price:** € 9.08
**Availability:** ✅ In Stock

## Summary

> 💼 Light up your productivity with power and style!

## Quick Answers

- **What is this?** Sylvania 20890 - CF42DT/E/IN/841 - 42 Watt Triple Tube Compact Fluorescent Light Bulb, 4100K by ledvance
- **How much does it cost?** € 9.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/38891921-sylvania-20890-cf42dt-e-in-841-42-watt-triple-tube)

## Best For

- ledvance enthusiasts

## Why This Product

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

## Key Features

- • **Endurance Champion:** Lasts up to 16,000 hours—set it and forget it for years of reliable illumination.
- • **Eco-Friendly & Smart:** ECOLOGIC design with integral end-of-life (EOL) feature supports sustainability and safety.
- • **Seamless Compatibility:** 4-pin GX24Q-4 base fits electronic and dimming ballasts for versatile installation.
- • **Power-Savvy Performance:** 42 watts of efficient energy use means lower bills without sacrificing brightness.
- • **Brilliant Cool White Glow:** 4100K color temp delivers crisp, professional lighting that energizes your workspace.

## Overview

The Sylvania 20890 is a 42-watt compact fluorescent lamp featuring a 4-pin GX24Q-4 base, delivering 3200 lumens of cool white light at 4100 Kelvin. Designed for indoor use with electronic and dimming ballasts, it offers an impressive 16,000-hour lifespan and an 82 CRI for true color rendering, making it an energy-efficient, long-lasting lighting solution perfect for professional environments.

## Description

Sylvania 20890 Compact Fluorescent 4 Pin Triple Tube 4100K, 42-watt , Cool White

## Features

- 42 Watts of energy
- 3200 Lumens of brightness
- 4100 Kelvin color temperature
- 16000 Hours

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | LEDVANCE |
| Light Type | Fluorescent |
| Special Feature | Base GX24Q-4, Voltage, Wattage 42W |
| Wattage | 42 watts |
| Bulb Shape Size | T4 |
| Bulb Base | E26 |
| Incandescent Equivalent Wattage | 42 Watts |
| Specific Uses For Product | Lamp |
| Light Color | Cool White |
| Voltage | 120 Volts |
| Unit Count | 1.00 Count |
| Color Temperature | 4100 Kelvin |
| Number of Items | 1 |
| Brightness | 3200 |
| Shape | T4 |
| Material | Glass |
| Model Name | 20890 |
| Indoor/Outdoor Usage | Indoor |
| Power Source | AC |
| Color Rendering Index | 82 |
| Power Consumption | 42 Watts |
| Item Package Quantity | 1 |
| Light Source Type | Compact Fluorescent Light (CFL) |
| Item Weight | 0.1 Pounds |
| Light Source Wattage | 42 Watts |
| Product Dimensions | 1.9"W x 6.9"H |
| Accepted voltage frequency | 100 to 120 Volts and 60 Hertz |
| Control Method | App |
| Average Life | 16000 Hours |
| White Brightness | 3200 Lumens |
| Efficiency | 76.19 LPW |
| Style | 42W |
| Global Trade Identification Number | 00046135208904 |
| Manufacturer | LEDVANCE LLC |
| UPC | 046135208904 |
| Part Number | 20890 |
| Item Weight | 1.6 ounces |
| Item model number | 20890 |
| Is Discontinued By Manufacturer | No |
| Size | 1 Count (Pack of 1) |
| Color | Cool White |
| Special Features | Base GX24Q-4, Voltage, Wattage 42W |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** LEDVANCE
- **Light Type:** Fluorescent
- **Special Feature:** Base GX24Q-4, Voltage, Wattage 42W
- **Wattage:** 42 watts
- **Bulb Shape Size:** T4

## Images

![Sylvania 20890 - CF42DT/E/IN/841 - 42 Watt Triple Tube Compact Fluorescent Light Bulb, 4100K - Image 1](https://m.media-amazon.com/images/I/418a5vDXziL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Does This bulb turn on immediately or within seconds . I bought one for the bathroom to replace and old one and it takes a minute to warm , too long**
A: This is still a fluorescent bulb, so it takes a second or less to turn on, and then depending on ambient temperatures in the room, a minute or so to come to full brightness as any fluorescent would do.    If you want instant on and instant full brightness, you might want to consider LED technology.     I hope that helps.

**Q: one light bulb came broken**
A: Mine came broken too, Amazon replaced it in 5 days.

**Q: The current bulb is the original that came with the ceiling recessed bathroom light.  it is model f42tbx/827/a/4p.  will this work?**
A: Yes, that is a good cross, but the color, or Kelvin temps will be different.  If you want to match what you took out of there, the 2700K, then the 20887, CF42DT/E/IN/827/ECO is what you want.   The one you selected here is a cool white, or 4100K, and isn't as warm in color, it's more cool.   But either one will work with the ballast you currently have and the fixture you have.

**Q: It's dimmable?**
A: Yes, it's dimmable.  Any fluorescent with 4 pins total, is dimmable as long as there is a dimmable ballast that is compatible to go with it.  SYLVANIA makes the 51836 dimmable ballast for this.

## Frequently Bought Together

- Sylvania 20890 Compact Fluorescent 4 Pin Triple Tube 4100K, 42-watt , Cool White
- SYLVANIA Incandescent Light Bulb, C7, 4W, Candelabra Base, 15 Lumens, 2850K, Non-Dimmable, Clear, Soft White - 4 Pack (13549)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-13*