---
product_id: 51812846
title: "Sylvania 18\" T8 Preheat Fluorescent Linear Tube Lamp, 15W, Premium Cool White Phosphor, 4100K, 70 CRI - 1 Pack (21603)"
brand: "ledvance"
price: "A$43"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/51812846-sylvania-18-t8-preheat-fluorescent-linear-tube-lamp-15w-premium
store_origin: AU
region: Australia
---

# 7,500 hours long lifespan CRI 70 for true color clarity 15W power efficiency Sylvania 18" T8 Preheat Fluorescent Linear Tube Lamp, 15W, Premium Cool White Phosphor, 4100K, 70 CRI - 1 Pack (21603)

**Brand:** ledvance
**Price:** A$43
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Sylvania 18" T8 Preheat Fluorescent Linear Tube Lamp, 15W, Premium Cool White Phosphor, 4100K, 70 CRI - 1 Pack (21603) by ledvance
- **How much does it cost?** A$43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/51812846-sylvania-18-t8-preheat-fluorescent-linear-tube-lamp-15w-premium)

## 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

- • **True-to-Life Color Rendering:** CRI 70 ensures your space looks vibrant and professional
- • **Trusted Legacy of 100+ Years:** Backed by SYLVANIA’s century of lighting innovation
- • **Premium Cool White 4100K Glow:** Modern, crisp lighting that enhances focus and ambiance
- • **Efficient 15W Power Consumption:** Bright illumination without the energy guilt
- • **Long-Lasting 7,500 Hour Lifespan:** Less hassle, more productivity with durable lighting

## Overview

The Sylvania 18" T8 Preheat Fluorescent Tube Lamp delivers 900 lumens of premium cool white light at 4100K with a reliable CRI of 70, all while consuming just 15 watts. Designed for indoor use, this frosted linear lamp offers a long 7,500-hour lifespan and is backed by over a century of SYLVANIA’s lighting expertise, making it a cost-effective and professional choice for modern workspaces.

## Description

Sylvania 18" T8 Preheat Fluorescent Linear Tube Lamp, 15W, Premium Cool White Phosphor, 4100K, 70 CRI - 1 Pack (21603)

## Features

- SYLVANIA G12 Medium B-Pin T8 linear fluorescent lamps offer a cost-effective solution for general purpose fluorescent lighting applications.
- These frosted lamps deliver good color rendering (CRI 70), lumen maintenance and long life of 7,500 hours.
- With a color temperature of 2100K and brightness of 900 lumens, experience quality lighting only by SYLVANIA with 100+ years in lighting innovation.
- Includes one 15W, 18" T8 linear fluorescent lamp.
- Power source type: AC/DC.
- Not for Sale in CA, CO, OR, RI.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | LEDVANCE |
| Light Type | Fluorescent |
| Special Feature | Frosted |
| Wattage | 15 watts |
| Bulb Shape Size | T8 |
| Bulb Base | G12 |
| Incandescent Equivalent Wattage | 60 Watts |
| Specific Uses For Product | For indoor use only |
| Light Color | Bright White |
| Voltage | 120 Volts |
| Unit Count | 1.0 Count |
| Color Temperature | 4100 Kelvin |
| Number of Items | 1 |
| Brightness | 900 Lumen |
| Shape | Tubular(T) |
| Material | Glass |
| Model Name | 21603 |
| Indoor/Outdoor Usage | Indoor |
| Power Source | Corded Electric |
| Color Rendering Index | 70.0 |
| Power Consumption | 15 Watts |
| Item Package Quantity | 1 |
| Light Source Type | Fluorescent |
| Item Weight | 0.15 Pounds |
| Light Source Wattage | 15 Watts |
| Product Dimensions | 1.1"W x 1.1"H |
| Accepted voltage frequency | 100 to 120 Volts and 60 Hertz |
| Control Method | App |
| Average Life | 7500 Hours |
| White Brightness | 900 Lumens |
| Efficiency | 60 lumens per watt |
| Manufacturer | LEDVANCE |
| Color | Frosted |
| UPC | 046135216039 |
| Light Output Maximum | 900 Lumens |
| Part Number | 21603 |
| Item Weight | 2.4 ounces |
| Item model number | 21603 |
| Size | 1 Count (Pack of 1) |
| Finish | Frosted |
| Number Of Pieces | 1 |
| Cutting Diameter | 1.09 Inches |
| Special Features | Frosted |
| Included Components | 1 Bulb |
| Batteries Required? | No |
| Warranty Description | For us & canadian customer questions or support please call us at 1-800-lightbulb (1-800-544-4828). |
| Assembled Diameter | 1.09 Inches |

## Product Details

- **Brand:** LEDVANCE
- **Light Type:** Fluorescent
- **Special Feature:** Frosted
- **Wattage:** 15 watts
- **Bulb Shape Size:** T8

## Images

![Sylvania 18" T8 Preheat Fluorescent Linear Tube Lamp, 15W, Premium Cool White Phosphor, 4100K, 70 CRI - 1 Pack (21603) - Image 1](https://m.media-amazon.com/images/I/41oPqf++tDS.jpg)

## Frequently Bought Together

- SYLVANIA 15W, 18" MOL, T8, Preheat Fluorescent Linear Tube Lamp, Premium Cool White Phosphor, 4100K, 70 CRI, 1 Count (Pack of 1), Frosted
- G E Lighting 2-Pack 64818 GE FS-2-C/TP Fluorescent Starter
- LEDVANCE 15W 18" T8 Linear Fluorescent Lamp, 4200K, 825 Lm, Non-Dimmable, Cool White - 1 Pack (21619)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-22*