---
product_id: 91933219
title: "28w 2D Square 4-Pin Gr10q Cap Cool White (4000k) Compact Fluorescent Lamp"
brand: "bell/kos/pro/eco/lumi"
price: "€ 25.46"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.sk/products/91933219-28w-2d-square-4-pin-gr10q-cap-cool-white-4000k
store_origin: SK
region: Slovakia
---

# 10,000 hours lifespan 2050 lumens bright output 28W power efficiency 28w 2D Square 4-Pin Gr10q Cap Cool White (4000k) Compact Fluorescent Lamp

**Brand:** bell/kos/pro/eco/lumi
**Price:** € 25.46
**Availability:** ✅ In Stock

## Summary

> 💼 Light up your workspace with smart, sustainable style!

## Quick Answers

- **What is this?** 28w 2D Square 4-Pin Gr10q Cap Cool White (4000k) Compact Fluorescent Lamp by bell/kos/pro/eco/lumi
- **How much does it cost?** € 25.46 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/91933219-28w-2d-square-4-pin-gr10q-cap-cool-white-4000k)

## Best For

- bell/kos/pro/eco/lumi enthusiasts

## Why This Product

- Trusted bell/kos/pro/eco/lumi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Lasting Glow:** Up to 10,000 hours of reliable illumination—less hassle, more productivity.
- • **Cool White Clarity:** 4000K color temp for crisp, professional lighting that enhances focus and ambiance.
- • **Plug & Play Simplicity:** Standard GR10q 4-pin base ensures easy installation in your office or home setup.
- • **Eco-Friendly Efficiency:** Rated Energy Class A for guilt-free, sustainable lighting that fits your green lifestyle.
- • **Energy-Smart Brilliance:** Save on bills with 28W delivering 1100W incandescent equivalent brightness.

## Overview

The Bell 28W 2D Square 4-Pin GR10q Cap Cool White Compact Fluorescent Lamp offers a powerful 2050 lumen output at an energy-efficient 28 watts. With a crisp 4000K color temperature and a long lifespan of 10,000 hours, this lamp is designed for professional environments seeking bright, reliable, and eco-conscious lighting solutions.

## Description

Product Description               Product- 28 watt 4000k 4 pin gr8 compact fluorescent lamps light bulb- watt- 28 watts- cap base- gr10q- volts- 220/240- dimmable- no- colour code- 840- colour- cool white- colour temp- 4000k/2050 lumen- hours- 10,000 hours- energy efficiency rating- a- if you have any questions you can contact us via email or call us free on 0800 112 36                  Box Contains               1 x 2d 28w gr10q 4pin energy saving bulb lamp 4000k cool white 10-12,000 hours

## Features

- 2d 28w gr10q 4pin energy saving bulb lamp 4000k cool white 10-12,000 hours
- Hours: 10,000 hours
- Cap base: gr10q 4 pin
- Colour code: 840 colour: cool white
- Colour temp: 4000k/2050 lumen

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Bell/Kos/Pro/Eco/Lumi |
| Manufacturer | Bell/Kos/Pro/Eco/Lumi |
| Product Dimensions | 53.3 x 1.8 x 1.8 cm; 220 g |
| Item model number | 0280-028835b |
| Part Number | 0280-028835b |
| Number of Items | 1 |
| Colour | White |
| Shape | Arbitrary(A) |
| Material | Glass |
| Voltage | 240 Volts |
| Special features | Dimmable |
| Power and Plug Description: | Electrical |
| Batteries included? | No |
| Batteries Required? | No |
| Type of Bulb | Energy Efficient |
| Cap Type | GR10q |
| EU Energy Efficiency Label | A |
| Luminous Flux | 2050 Lumen |
| Wattage | 28 watts |
| Wattage | 28 Watts |
| Incandescent Equivalent | 1100 Watts |
| Colour Temperature | 4000 Kelvin |
| Average Life | 10000 Hours |
| Lamp Power Factor | 0.6 |
| Item Weight | 220 g |
| Guaranteed software updates until | unknown |

## Product Details

- **Brand:** Bell/Kos/Pro/Eco/Lumi
- **Light type:** Fluorescent
- **Special feature:** Dimmable
- **Wattage:** 28 watts
- **Incandescent equivalent wattage:** 1100 Watts

## Images

![28w 2D Square 4-Pin Gr10q Cap Cool White (4000k) Compact Fluorescent Lamp - Image 1](https://m.media-amazon.com/images/I/41DDUyqsScL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect!
*by U***E on 15 February 2025*

1st time that i am changing the light by myself, usually the Landlord so i had no clue but now it seems i had to do it myself. After searching i finally founn the right one and it fits perfectly and still lights up nice and bright. Good quality and stilll working! no regrets!

### ⭐⭐⭐⭐⭐ Decent product
*by M***Y on 26 May 2024*

Excellent great value for how much brighter than the previous 1 I had of same description ever ready ,hope it lasts longer aswell ,time will tell

### ⭐⭐⭐⭐ May not fit certain brands of light fittings
*by J***N on 17 February 2018*

I bought this as a direct replacement for my old 28w 2D lamp. I thought that they were all compatible with light fittings that supported GR10q. Unfortunately I was mistaken. From the attached picture, which shows the existing bulb, the light fitting requires the 2 support arms to be a certain, fixed width apart, in addition to the 2D square 4 pin (GR10q) connector, in order to fit into the actual light fitting housing. The support arms were slightly too narrow and therefore the lamp did not fit into my particular brand of light fitting. This appears to be more an issue with the actual light fitting rather than the actual lamp, this lamp is GE branded and on my light fitting instructions it did say (GE branded replacement lamps may not fit). That being said, I was able to get a Phillips branded version from a well known DIY online outlet and it fitted. I was given a refund by the seller as the lamp is not compatible with my particular light fitting and there is no way I could have known this from the product description provided.

## Frequently Bought Together

- Bell/Kos/Pro/Eco/Lumi Bell 28w 2D Square 4-Pin Gr10q Cap Cool White (4000k) Compact Fluorescent Lamp, 28 W
- Eveready Fluorescent Tube Light Starter 4-65W Twin Pack, Cool White, 350 Lumens, 65W, 1 Count
- Bell 28w 2D Square 4-Pin Gr10q Cap Standard White (3500k) Compact Fluorescent Lamp, 28 W

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**Shop now:** [https://www.desertcart.sk/products/91933219-28w-2d-square-4-pin-gr10q-cap-cool-white-4000k](https://www.desertcart.sk/products/91933219-28w-2d-square-4-pin-gr10q-cap-cool-white-4000k)

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