---
product_id: 47961741
title: "28w 2D Square 4-Pin Gr10q Cap Standard White (3500k) Compact Fluorescent Lamp [Energy Class G] | 2d square design, gr10q 4-pin base, 3500k standard white light, energy class g rated"
brand: "osram"
price: "€ 34.81"
currency: EUR
in_stock: true
category: "Osram"
url: https://www.desertcart.sk/products/47961741-28w-2d-square-4-pin-gr10q-cap-standard-white-3500k
store_origin: SK
region: Slovakia
---

# 8000 hours lifespan 80% less energy 28W = 150W brightness 28w 2D Square 4-Pin Gr10q Cap Standard White (3500k) Compact Fluorescent Lamp [Energy Class G] | 2d square design, gr10q 4-pin base, 3500k standard white light, energy class g rated

**Brand:** osram
**Price:** € 34.81
**Availability:** ✅ In Stock

## Summary

> 💡 Light smarter, live brighter — don’t get left in the dark!

## Quick Answers

- **What is this?** 28w 2D Square 4-Pin Gr10q Cap Standard White (3500k) Compact Fluorescent Lamp [Energy Class G] | 2d square design, gr10q 4-pin base, 3500k standard white light, energy class g rated by osram
- **How much does it cost?** € 34.81 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/47961741-28w-2d-square-4-pin-gr10q-cap-standard-white-3500k)

## Best For

- osram enthusiasts

## Why This Product

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

## Key Features

- • **Bright & Balanced:** 28W output delivers the equivalent brightness of a 150W incandescent with uniform light distribution.
- • **Long-Lasting Glow:** Rated for 8000 hours, reducing the hassle of frequent replacements.
- • **Slim & Sleek Design:** Low-profile square shape fits seamlessly into modern wall and ceiling fixtures.
- • **Energy-Smart Lighting:** Consumes 80% less power than traditional GLS bulbs, saving you money and the planet.
- • **Versatile Compatibility:** Works flawlessly with both electronic and conventional control gear for easy installation.

## Overview

The Osram 28W 2D Square 4-Pin Compact Fluorescent Lamp offers a warm white 3500K light with 1600 lumens brightness. Designed for energy efficiency, it uses 80% less power than traditional bulbs while providing the equivalent output of a 150W incandescent. Its slim square profile ensures uniform light distribution and fits perfectly in slimline fixtures. Rated for 8000 hours, this lamp is a reliable, cost-effective lighting solution for indoor use.

## Description

Product Description Low energy 2d style light bulb has 8000 hours rated life and uses 80% less energy than gls. u350 Box Contains 1 x 28w 2d 4 pin col 835 standard white [3500 K] osram branded(osram)

## Features

- Low profile for slimline wall or ceiling fittings.
- Uses 80% less energy then gls. 8000 hours rated life.
- 8000 hours rated life.
- 28w is equivalent to 150w.
- Note:Average ignition time at ambient temperature is 3-5 seconds (maximum 10 seconds), with a run-up time from 60-100% within 150 seconds
- Square shape provides uniform distribution of light
- Suitable for operation on electronic and conventional control gear
- Overall length : 205.0 mm, Outer bulb : T12
- Maximum diameter : 17.0 mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00146BMGU |
| Accepted Voltage Frequency | 100 to 240 Volts and 50 Hertz to 60 Hertz |
| Average Life Span | 8000 Hours |
| Best Sellers Rank | 3,509 in Lighting ( See Top 100 in Lighting ) 52 in Fluorescent & Neon Tubes |
| Brand Name | OSRAM |
| Bulb Base | E27 |
| Bulb Shape Size | T6 |
| Color Rendering Index (CRI) | 85 |
| Color Temperature | 3500 Kelvin |
| Colour | Frosted |
| Connectivity Protocol | Bluetooth, USB, Wi-Fi |
| Connectivity Technology | USB |
| Control Method | Push Button |
| Controller Type | Push Button |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,175) |
| EU Energy Efficiency Label | B |
| Incandescent Equivalent | 150 Watts |
| Included Components | 3 lamps |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions W x H | 22W x 22H centimetres |
| Item Shape | Square |
| Item Type Name | Osram 28w 2D Square 4-Pin Gr10q Cap Standard White (3500k) Compact Fluorescent Lamp |
| Item Weight | 0.22 Kilograms |
| Light Color | warm white |
| Light Output Maximum | 1600 Lumens |
| Light Source Wattage | 28 Watts |
| Light Type | CFL |
| Manufacturer | Osram |
| Manufacturer Part Number | 0280-028835o |
| Material Type | Glass |
| Model Name | XX-D-50 |
| Model Number | 0280-028835o |
| Number of Items | 1 |
| Package Quantity | 1 |
| Power Consumption | 28 Watts |
| Power Source | electric |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Features | Energy Efficient |
| Specific Uses | Ceiling |
| Specification Met | Energy rating A |
| Style Name | E27 GLS BULB |
| Type of Bulb | Compact fluorescent |
| Unit Count | 1.0 count |
| Voltage | 120 Volts |
| Wattage | 28 watts |
| White Brightness | 2050 Lumens |

## Product Details

- **Brand:** OSRAM
- **Bulb shape size:** T6
- **Light type:** CFL
- **Special feature:** Energy Efficient
- **Wattage:** 28 watts

## Images

![28w 2D Square 4-Pin Gr10q Cap Standard White (3500k) Compact Fluorescent Lamp [Energy Class G] | 2d square design, gr10q 4-pin base, 3500k standard white light, energy class g rated - Image 1](https://m.media-amazon.com/images/I/51CfAFoKC8L.jpg)

## Available Options

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

## Questions & Answers

**Q: How big is it? Description says 53cm? That's half a meter. Can't imagine that being right. What's the actual size please?**
A: It's about 20 cm square.

**Q: on the 28 2d 4 pin light what position should the 9 little switches be in on the back plate**
A: There are no switches on the back of this lamp. 
Insert the 4 pins into the fitting and turn on...

**Q: Is this warm white (yellow)or cool (blue)?**
A: Warm white

**Q: Mine doesnt say Orsam anywhere... neither on the box nor the bulb. is this normal or was i sold a fake?**
A: If your product did not arrive in a green box clearly marked with the Osram logo and there are no markings on the lamp then it's not the genuine article...

## Frequently Bought Together

- Osram 28w 2D Square 4-Pin Gr10q Cap Standard White (3500k) Compact Fluorescent Lamp [Energy Class G]
- Philips S10 Starter Pack of 2

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**Shop now:** [https://www.desertcart.sk/products/47961741-28w-2d-square-4-pin-gr10q-cap-standard-white-3500k](https://www.desertcart.sk/products/47961741-28w-2d-square-4-pin-gr10q-cap-standard-white-3500k)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-07-26*