F21T5/830 - 21 Watt 34 Inch T5 Fluorescent Light Bulb - 3000K Warm White - 2100 Lumens - 36,000 Hours

The F21T5/830 is engineered for longevity and clarity. Featuring a thicker, protected filament design, it resists end blackening and maintains steady light output throughout its life. With a 90 CRI rating, it delivers a full, vibrant spectrum of light—making it ideal for offices, retail, or any space where color clarity and performance matter. Reliable, efficient, and built to outperform standard tubes.

Specs

SKU
F21T5/830
Bulb Shape
T5
Wattage
21
Color Rendering
85 CRI
Power Voltage
120–277V
Dimmability
Dimmable
Color Temperature
3000 Kelvin
Base Code
G5
Base Type
Miniature Bi-Pin
Life Hours
36000
Lumens
2100
Contains Mercury
Yes
Shatter Guard
No
UL Listed
Yes
Length
34 Inches
Width
0.625 inches
Height
0.625 inches

A BRIGHTER FUTURE

Regular price $189.73
Regular price Sale price 189.73
($4.74 per bulb)
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Specs

SKU
F21T5/830
Bulb Shape
T5
Wattage
21
Color Rendering
85 CRI
Power Voltage
120–277V
Dimmability
Dimmable
Color Temperature
3000 Kelvin
Base Code
G5
Base Type
Miniature Bi-Pin
Life Hours
36000
Lumens
2100
Contains Mercury
Yes
Shatter Guard
No
UL Listed
Yes
Length
34 Inches
Width
0.625 inches
Height
0.625 inches

About

GoodBulb F21T5/830 21W Fluorescent Light Bulb: Legacy Warm White Performance
34-inch T5 Fluorescent Light Bulb with a miniature bi-pin G5 base. Producing 2,100 lumens at 3000 Kelvin Warm White, this slim and efficient lamp delivers a soft, inviting glow ideal for offices, retail, residential settings, and decorative fixtures. With a 36,000-hour rated life, it’s designed for longevity and consistent performance in both commercial and everyday environments.

Why 3000K Warm White?
The 3000K spectrum creates a cozy and comfortable atmosphere without sacrificing clarity—perfect for blending ambiance with functionality.

āœ” Offices & Conference Rooms – Adds warmth without dimming focus.
āœ” Retail & Hospitality Spaces – Creates a relaxed environment for customers.
āœ” Residential Use – Ideal for kitchens, hallways, and living areas that need softer light.

Slim Form. Strong Output.

āœ” 2,100 Lumen Brightness – Powerful output for compact fixtures.
āœ” 36,000-Hour Rated Life – Reduces maintenance and lowers replacement frequency.
āœ”...

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