---
product_id: 28169853
title: "Circle (6 Pack) F13T5/CW - T5 Fluorescent 4100K Cool White - 21\" Linear - 13 Watt T5 - Under the Counter Light Bulbs"
brand: "circle"
price: "R1156"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Circle"
url: https://www.desertcart.co.za/products/28169853-circle-6-pack-f13t5-cw-t5-fluorescent-4100k-cool-white
store_origin: ZA
region: South Africa
---

# 6,000 hrs per bulb lifespan 13W efficient power 21-inch sleek linear design Circle (6 Pack) F13T5/CW - T5 Fluorescent 4100K Cool White - 21" Linear - 13 Watt T5 - Under the Counter Light Bulbs

**Brand:** circle
**Price:** R1156
**Availability:** ✅ In Stock

## Summary

> ✨ Light up your space, upgrade your vibe!

## Quick Answers

- **What is this?** Circle (6 Pack) F13T5/CW - T5 Fluorescent 4100K Cool White - 21" Linear - 13 Watt T5 - Under the Counter Light Bulbs by circle
- **How much does it cost?** R1156 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/28169853-circle-6-pack-f13t5-cw-t5-fluorescent-4100k-cool-white)

## Best For

- circle enthusiasts

## Why This Product

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

## Key Features

- • **Secure Packaging:** Arrives intact and ready to illuminate, no broken bulbs, no delays.
- • **Versatile Placement:** Perfect for kitchens, RVs, patios, and marine spaces—wherever style meets function.
- • **Effortless Installation:** Plug-and-twist design for instant, hassle-free lighting upgrade.
- • **Long-Lasting Brightness:** Each bulb shines for 6,000 hours—totaling 36,000 hours in this value 6-pack.
- • **Optimal Cool White Glow:** 4100K color temperature delivers crisp, professional ambiance under cabinets.

## Overview

Circle’s 6-pack of 13W T5 fluorescent bulbs offers a sleek 21-inch linear design with a crisp 4100K cool white light. Engineered for easy plug-and-twist installation, these bulbs provide a combined 36,000 hours of reliable, energy-efficient illumination—ideal for under-cabinet, RV, and marine lighting needs.

## Description

Circle (6 Pack) F13T5/CW - T5 Fluorescent 4100K Cool White - 21" Linear - 13 Watt T5 - Under the Counter Light Bulbs - desertcart.com

Review: Great product for the money. - The lights were as described, and seem to work fine.
Review: Great product and price - Perfect fit for my under cabinet lights, great price, nice soft white light.

## Features

- Bulb Specifications: These fluorescent bulbs, model number F13T5/CW , come in a 6 pack. It uses 13 watts to a nice spread of light. It is a cool white color, 4100K. The bulbs are tubular and are 21" long.
- Easy & Quick Install: These linear bulbs come with 2 pins at each end so that you can just pop it into the socket and twist it into place. Easy to install and immediately lights up your home so that it looks fantastic.
- Long Lifetime Value Pack: Each bulb gives you an average of 6,000 hours of light. With this 6 pack, you get a total of 36,000 hours of light! With our brand, you enjoy a lot of comfortable light.
- Multi-Purpose Applications: The under-counter bulbs are most often used in the kitchen and in an RV. Also used on the patio, in many marine applications and for the lighting fixture under any cabinetry.
- Reliable: We use secure packaging materials so you get the bulbs you ordered, not broken glass.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EDMZNI4 |
| Accepted Voltage Frequency | 100 to 120 Volts and 60 Hertz |
| Additional Features | Instant On, Under cabinet lighting |
| Best Sellers Rank | #3,687 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Fluorescent Tubes |
| Brand | Circle |
| Brand Name | Circle |
| Bulb Base | G5 |
| Bulb Shape Size | T5 1/2 |
| Color | 4100 |
| Color Rendering Index | 100 |
| Color Temperature | 4100 Kelvin |
| Connectivity Technology | Normal bulb |
| Control Method | App |
| Controller Type | Push Button |
| Customer Reviews | 4.5 out of 5 stars 2,554 Reviews |
| Incandescent Equivalent Wattage | 13 Watts |
| Included Components | 6 Pack Long life T5 Fluorescent Tubes, Perfect under the counter kitchen light bulbs, T5 fluorescent bulb |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions W x H | 2.5"W x 21"H |
| Item Weight | 12.8 Ounces |
| Light Color | Cool White |
| Light Source Operating Life | 120000 Hours |
| Light Source Type | Fluorescent |
| Light Source Wattage | 13 Watts |
| Light Type | Fluorescent |
| Manufacturer | Circle® |
| Manufacturer Part Number | F13T5/CW |
| Manufacturer Warranty Description | 1 year warranty. Please contact us if you have any issues. We offer 100% customer satisfaction on all our products! |
| Material Type | Glass |
| Model Number | F13T5/CW |
| Number of Items | 1 |
| Package Quantity | 6 |
| Power Consumption | 13 Watts |
| Power Source | Corded Electric |
| Shape | Tubular(T) |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Feature | Instant On, Under cabinet lighting |
| Style Name | F13T5 |
| UPC | 030465195553 |
| Unit Count | 6.0 Count |
| Voltage | 120 Volts |
| Wattage | 13 watts |
| White Brightness | 1300 Lumens |

## Product Details

- **Brand:** Circle
- **Bulb Shape Size:** T5 1/2
- **Light Type:** Fluorescent
- **Special Feature:** Instant On, Under cabinet lighting
- **Wattage:** 13 watts

## Images

![Circle (6 Pack) F13T5/CW - T5 Fluorescent 4100K Cool White - 21" Linear - 13 Watt T5 - Under the Counter Light Bulbs - Image 1](https://m.media-amazon.com/images/I/61T7SGQDcoL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product for the money.
*by K***U on May 13, 2026*

The lights were as described, and seem to work fine.

### ⭐⭐⭐⭐⭐ Great product and price
*by J***T on March 17, 2026*

Perfect fit for my under cabinet lights, great price, nice soft white light.

### ⭐⭐⭐⭐⭐ Great Purchase
*by M***T on April 7, 2026*

Perfect!!

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**Shop now:** [https://www.desertcart.co.za/products/28169853-circle-6-pack-f13t5-cw-t5-fluorescent-4100k-cool-white](https://www.desertcart.co.za/products/28169853-circle-6-pack-f13t5-cw-t5-fluorescent-4100k-cool-white)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-06-19*