---
product_id: 4127425
title: "20122 - FA100WBC 8W T4 10-1/2IN Straight T4 Fluorescent Tube Light Bulb"
brand: "westek"
price: "€ 69.53"
currency: EUR
in_stock: true
reviews_count: 12
category: "Westek"
url: https://www.desertcart.pt/products/4127425-20122-fa100wbc-8w-t4-10-1-2in-straight-t4-fluorescent
store_origin: PT
region: Portugal
---

# 8W power-efficient brilliance 10.5-inch perfect fit Warm White 3000K glow 20122 - FA100WBC 8W T4 10-1/2IN Straight T4 Fluorescent Tube Light Bulb

**Brand:** westek
**Price:** € 69.53
**Availability:** ✅ In Stock

## Summary

> 💡 Illuminate your space with rare precision and cozy warmth—don’t settle for less!

## Quick Answers

- **What is this?** 20122 - FA100WBC 8W T4 10-1/2IN Straight T4 Fluorescent Tube Light Bulb by westek
- **How much does it cost?** € 69.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/4127425-20122-fa100wbc-8w-t4-10-1-2in-straight-t4-fluorescent)

## Best For

- westek enthusiasts

## Why This Product

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

## Key Features

- • **Warm White Ambiance:** 3000K color temperature with CRI 100 for cozy, natural lighting that elevates your workspace or home vibe.
- • **Energy-Smart 8W Power:** Maximize efficiency without sacrificing brightness—480 lumens of warm white light that’s easy on your energy bill.
- • **Reliable Legacy Brand:** Westek’s trusted quality ensures long-lasting performance—perfect for those who demand durability and consistency.
- • **Plug & Play Convenience:** Standard G5 bi-pin base and 120V compatibility make installation seamless—upgrade your lighting without hassle.
- • **Precision 10.5-Inch Size:** Rare, hard-to-find T4 miniature tube fits perfectly where others can’t—no more endless searching or compromises.

## Overview

The Westek FA100WBC is an 8-watt, 10.5-inch T4 fluorescent tube light bulb delivering 480 lumens of warm white (3000K) light. Featuring a G5 bi-pin base and energy-efficient design, it’s a rare, hard-to-find replacement ideal for specialized fixtures, offering reliable, long-lasting illumination with a perfect balance of brightness and cozy ambiance.

## Description

8 watt 10-1/2" T4 Miniature Bi-Pin (G5) Base Warm White Westek Fluorescent Light Bulb

Review: All looks good! - All looks good!
Review: Excellent replacement of hard to find bulb. FYI: 10.5" end to end. - I spent 3 days trying to track this odd bulb down between the Home improvement stores, Wally world, and my local hardware store.. Even the store I bought the fixtures from (Loews) doesn't carry it. I had forgotten I bought the bulb here on desertcart once before (four years ago to be exact) Lo and behold they still have it. Not the cheapest solution, but those "1001 bulbs" websites that sell it for $2.00 also charge $15.00 for shipping, which is crazy. The price here was ok enough for something that's going to become harder to find in the future. Because it's such a weird size, there is currently no LED equivalent like the more popular 12' or 48" sizes. I made the crusade to rid my entire home of those horrible twisty CFL bulbs with more efficient (and safer..) LEDs as soon as they became affordable. However, my kitchen has 6 chained mini fluorescent fixtures under the cabinets. I'm going to be replacing those last remaining FLS with LED pucks, just not a project I have time for now. Mine are on at least 12 hours a day so fair enough value that I got 4 years from the last one. I'm happy! BTW: it's 10.5" end to end.

## Features

- Color/Finish: Warm White

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0014XTJJA |
| Accepted voltage frequency | 100 to 120 Volts and 60 Hertz |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #198,305 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,255 in Fluorescent Tubes |
| Brand | Westek |
| Brightness | 480 Lumen |
| Bulb Base | G5 |
| Bulb Shape Size | T4 |
| Color | Warm White |
| Color Rendering Index | 100 |
| Color Temperature | 3000 Kelvin |
| Control Method | App |
| Customer Reviews | 4.3 4.3 out of 5 stars (246) |
| Date First Available | January 16, 2007 |
| Efficiency | 60 lumens per watt |
| Finish | Warm white |
| Incandescent Equivalent Wattage | 40 Watts |
| Indoor/Outdoor Usage | Outdoor |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.41 ounces |
| Item model number | FA100WBC |
| Light Color | Warm White |
| Light Output Maximum | 480 Lumens |
| Light Source Type | Fluorescent |
| Light Source Wattage | 8 Watts |
| Light Type | Fluorescent |
| Manufacturer | Westek |
| Material | copper |
| Model Name | FA100WBC |
| Number of Items | 1 |
| Part Number | FA100WBC |
| Power Consumption | 8 Watts |
| Power Source | Corded Electric |
| Product Dimensions | 10.5"W x 10.5"H |
| Shape | T4 |
| Size | 1 Count (Pack of 1) |
| Special Feature | Energy Efficient |
| Special Features | Energy Efficient |
| Specific Uses For Product | General Lighting |
| Style | Standard |
| UPC | 047235201222 |
| Unit Count | 1 Count |
| Voltage | 120 Volts |
| Wattage | 8.00 |
| White Brightness | 480 Lumens |

## Product Details

- **Brand:** Westek
- **Bulb Shape Size:** T4
- **Light Type:** Fluorescent
- **Special Feature:** Energy Efficient
- **Wattage:** 8.00

## Images

![20122 - FA100WBC 8W T4 10-1/2IN Straight T4 Fluorescent Tube Light Bulb - Image 1](https://m.media-amazon.com/images/I/41aUVdCjLgS.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ All looks good!
*by B***N on November 8, 2025*

All looks good!

### ⭐⭐⭐⭐⭐ Excellent replacement of hard to find bulb. FYI: 10.5" end to end.
*by C***E on August 1, 2018*

I spent 3 days trying to track this odd bulb down between the Home improvement stores, Wally world, and my local hardware store.. Even the store I bought the fixtures from (Loews) doesn't carry it. I had forgotten I bought the bulb here on Amazon once before (four years ago to be exact) Lo and behold they still have it. Not the cheapest solution, but those "1001 bulbs" websites that sell it for $2.00 also charge $15.00 for shipping, which is crazy. The price here was ok enough for something that's going to become harder to find in the future. Because it's such a weird size, there is currently no LED equivalent like the more popular 12' or 48" sizes. I made the crusade to rid my entire home of those horrible twisty CFL bulbs with more efficient (and safer..) LEDs as soon as they became affordable. However, my kitchen has 6 chained mini fluorescent fixtures under the cabinets. I'm going to be replacing those last remaining FLS with LED pucks, just not a project I have time for now. Mine are on at least 12 hours a day so fair enough value that I got 4 years from the last one. I'm happy! BTW: it's 10.5" end to end.

### ⭐⭐⭐⭐ Great specialty bulb
*by K***. on September 9, 2019*

This is a hard to find replacement tube, so it was nice to find it here. They aren't cheap, so if you don't already own a fixture that uses this unusual tube, don't buy one. If you already own one and need a replacement, this one is a good bet. The packaging is superb, unlike another reviewer suggested. I purchased to bulbs, which were in original, unopened packaging, rubber-banded back to back, and wrapped in sufficient bubble wrap to fill a 4x8x12 inch box. Bulbs are easy to install. Only downside, they are a little slow to warm up and brighten up. Once brightened up, they illuminate my undercounter space very well.

## Frequently Bought Together

- Westek 20122 - FA100WBC 8W T4 10-1/2IN Straight T4 Fluorescent Tube Light Bulb
- Technical Precision Replacement for Westek 20125 - FA200WBC - 16 Watt T4 Natural White Fluorescent Light Bulb

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-14*