---
product_id: 9079507
title: "Sunlite 05021 FC16T9/CW T9 Round Fluorescent Circline Lamp, 40 Watts, 2600 Lumens, 4100K Cool White, RoHS Compliant, G10Q 4-Pin Base, 1 Pack"
brand: "sunlite"
price: "$114.54"
currency: USD
in_stock: true
category: "Sunlite"
url: https://www.desertcart.us/products/9079507-sunlite-05021-fc16t9-cw-t9-round-fluorescent-circline-lamp-40
store_origin: US
region: United States of America
---

# 40W energy efficient power 2600 lumens bright output G10Q 4-pin easy install Sunlite 05021 FC16T9/CW T9 Round Fluorescent Circline Lamp, 40 Watts, 2600 Lumens, 4100K Cool White, RoHS Compliant, G10Q 4-Pin Base, 1 Pack

**Brand:** sunlite
**Price:** $114.54
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Sunlite 05021 FC16T9/CW T9 Round Fluorescent Circline Lamp, 40 Watts, 2600 Lumens, 4100K Cool White, RoHS Compliant, G10Q 4-Pin Base, 1 Pack by sunlite
- **How much does it cost?** $114.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/9079507-sunlite-05021-fc16t9-cw-t9-round-fluorescent-circline-lamp-40)

## Best For

- sunlite enthusiasts

## Why This Product

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

## Key Features

- • **Long-Lasting Glow:** 10,000 hours of reliable lighting—less replacements, more productivity.
- • **Brilliant Brightness:** 2600 lumens flood your space with crisp, cool white light at 4100K.
- • **Eco-Conscious Choice:** RoHS compliant to keep your workspace green and guilt-free.
- • **Effortless Installation:** G10Q 4-pin base designed for quick, hassle-free setup.
- • **Power Meets Performance:** Only 40 watts for brilliant, cost-saving illumination.

## Overview

The Sunlite 05021 FC16T9/CW is a 16-inch circular fluorescent lamp delivering 2600 lumens of cool white light at 4100K, powered efficiently by 40 watts. Featuring a G10Q 4-pin base for easy installation and a long lifespan of 10,000 hours, this RoHS-compliant lamp is perfect for professional and residential indoor lighting, combining energy savings with consistent, vibrant illumination.

## Description

Sunlite’s T9 Round Fluorescent Circline Lamp is an energy-efficient, cost-effective lighting solution with a long lifespan of 10,000 hours. Consuming only 40 watts of power, this 2600-lumen lamp reduces your carbon footprint and electricity bill while providing bright and consistent illumination. The G10Q 4-pin base allows for easy installation, and the 4100K cool white light creates a cooling ambiance in living spaces. RoHS compliant and environmentally friendly, perfect for both home and workspace use, measuring 16" D x 1.13" H x 16" W.

## Features

- ENERGY EFFICIENT – This ceiling light consumes only 40 watts of power, making it a cost-effective choice for your lighting needs. Its energy efficiency helps reduce your carbon footprint and electricity bill, saving you money in the long run.
- LONG LIFE SPAN - Boasting an impressive average rated life of 10,000 hours, this T9 Round Fluorescent Circline Lamp ensures hassle-free, long-term use, minimizing the need for frequent replacements. With 2600 lumens, this T9 fluorescent lamp provides bright and consistent illumination, ensuring excellent visibility and vibrant colors in your space.
- G10Q BASE - Featuring a G10Q 4-pin base, the Sunlite fluorescent lamp is designed for quick and simple installation in compatible fixtures.
- COOL WHITE – At 4100K these cool white bulbs provide a cool glow in bedrooms, living spaces or anywhere you want to set relaxed mood.
- ROHS COMPLIANT - This environmentally friendly lamp meets the strict guidelines of the RoHS Directive. Dimensions 16” D x 1.13” H x 16” W.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B009F90JLC |
| Accepted Voltage Frequency | 100 to 120 Volts and 60 Hertz |
| Additional Features | 16-Inch Size, Easy To Install, Energy Efficient, G10Q 4-Pin Base, RoHS Compliant |
| Best Sellers Rank | #42,811 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #208 in Fluorescent Tubes |
| Brand Name | Sunlite |
| Bulb Base | GZ10 |
| Bulb Shape Size | FC16 |
| Color | 4100k Cool White |
| Color Rendering Index | 62 |
| Color Temperature | 4100 Kelvin |
| Connectivity Technology | Normal bulb |
| Control Method | App |
| Controller Type | Push Button |
| Customer Reviews | 4.5 4.5 out of 5 stars (809) |
| Efficiency | Efficient |
| Incandescent Equivalent Wattage | 40 Watts |
| Included Components | Circline Bulb |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions W x H | 1.13"W x 16"H |
| Item Type Name | Bulb, 2600 Lumens, G10q 4-Pin Base, 40 Watts (16-Inch), |
| Item Weight | 0.95 Pounds |
| Light Color | Cool White |
| Light Output Maximum | 2600 Lumens |
| Light Source Operating Life | 10000 Hours |
| Light Source Type | Linear Fluorescent Lamp |
| Light Source Wattage | 40 Watts |
| Light Type | Fluorescent |
| Manufacturer | Sunshine Lighting |
| Manufacturer Part Number | FC16T9/CW |
| Manufacturer Warranty Description | See packaging for details. |
| Material Type | Glass |
| Model Name | 40W 05021 Fluorescent T9 Crcline Ceiling Light |
| Model Number | FC16T9/CW |
| Number of Items | 1 |
| Package Quantity | 1 |
| Power Consumption | 40 Watts |
| Power Source | Corded Electric |
| Shape | Circular |
| Specific Uses For Product | Circline Fixtures, Hallways, Indoor Lighting, Kitchen Lighting, Residential and Commercial |
| Specification Met | RoHS |
| Style Name | Classic |
| UPC | 653703050218 |
| Unit Count | 1.0 Count |
| Voltage | 120 Volts |
| Wattage | 40 watts |
| White Brightness | 2600 Lumens |

## Product Details

- **Brand:** Sunlite
- **Bulb Shape Size:** FC16
- **Light Type:** Fluorescent
- **Special Feature:** 16-Inch Size, Easy To Install, Energy Efficient, G10Q 4-Pin Base, RoHS Compliant
- **Wattage:** 40 watts

## Images

![Sunlite 05021 FC16T9/CW T9 Round Fluorescent Circline Lamp, 40 Watts, 2600 Lumens, 4100K Cool White, RoHS Compliant, G10Q 4-Pin Base, 1 Pack - Image 1](https://m.media-amazon.com/images/I/41Z4SVqTYQL.jpg)
![Sunlite 05021 FC16T9/CW T9 Round Fluorescent Circline Lamp, 40 Watts, 2600 Lumens, 4100K Cool White, RoHS Compliant, G10Q 4-Pin Base, 1 Pack - Image 2](https://m.media-amazon.com/images/I/71GoRDU2uNL.jpg)
![Sunlite 05021 FC16T9/CW T9 Round Fluorescent Circline Lamp, 40 Watts, 2600 Lumens, 4100K Cool White, RoHS Compliant, G10Q 4-Pin Base, 1 Pack - Image 3](https://m.media-amazon.com/images/I/71WjOEtlymL.jpg)
![Sunlite 05021 FC16T9/CW T9 Round Fluorescent Circline Lamp, 40 Watts, 2600 Lumens, 4100K Cool White, RoHS Compliant, G10Q 4-Pin Base, 1 Pack - Image 4](https://m.media-amazon.com/images/I/81fEOZeDHSL.jpg)
![Sunlite 05021 FC16T9/CW T9 Round Fluorescent Circline Lamp, 40 Watts, 2600 Lumens, 4100K Cool White, RoHS Compliant, G10Q 4-Pin Base, 1 Pack - Image 5](https://m.media-amazon.com/images/I/917xcGJofvL.jpg)

## Available Options

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

## Questions & Answers

**Q: Will this work for 18” inch ring light or no?**
A: I used this lamp on my desk lamp with magnifier.  Worked ok .  Not sure how you measured the 18 inches.  Lamp is approximately 8 inches in diameter.

**Q: Does this bulb come with a plug or is it hard wired? i want to use it as an led ring behind my vanity mirror.**
A: It is not an LED, it's a fluorescent bulb.  It has a standard four-pin connector that must plug into a receiving fluorescent fixture.  If you don't already have the fixture, this bulb isn't going to work for you.

**Q: I am using this for photography - not for home installment. How would I "plug in" the light for my purposes? It is unclear in the description/picture!**
A: This bulb is only compatible with a certain type of receptacle.  I believe there should be a 2 or 3 hole female plug near the interior of where the bulb would attach (the male attachment is also on the interior of the bulb).  Unless you're replacing a similar bulb in a previously existing receptacle, I wouldn't recommend this bulb as it's unlike most other "screw-in" bulbs.

**Q: CRI for the 40W 16" warm white bulb?**
A: Yes

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-16*