Replacement for Sylvania 21376 F40T12/930/ECO - 15 Pack T12 Tubes

In this review the reviewer looks at the Replacement for Sylvania 21376 F40T12/930/ECO fluorescent tube set and why a buyer needing consistent warm white lighting should consider it. The 15-pack offers a practical replacement for fixtures using the F40T12 form factor, and the single biggest reason to buy is straightforward: it delivers reliable 3000K warm white output with strong color rendering across a large quantity of lamps, which is ideal for workshops, retail backrooms, or larger maintenance jobs where matching color and lifetime matter.

Key Features

• 15 Light Bulbs: Buying in a 15-pack reduces the hassle of repeated purchases and ensures you have spares for multiple fixtures or future replacements.
• T12 Glass Size with G13 Base: The standard T12 diameter and two-pin G13 base make these tubes compatible with existing T12 fixtures without adapter changes.
• 3000K Color Temperature: The warm 3000K light produces a softer, less clinical appearance than higher kelvin bulbs, useful in customer-facing or comfort-focused spaces.
• 3000 Lumens and 90 CRI: High lumen output and a 90 CRI help colors appear more accurate and details remain clear under the lamp.
• 20,000 Hour Rated Life: A long rated lifetime lowers the frequency of replacements for steady installations, saving time on maintenance.
• 47.76 in Length: At about 48 in these tubes match standard F40T12 fixtures for easy swap-in replacements.

Who It's For

This product suits maintenance teams, facility managers, and homeowners who need multiple like-for-like replacements for existing T12 fixtures and value a warmer white light with good color rendering. The pack format is particularly convenient for schools, warehouses, and shops that replace many tubes at once.

Those who should look elsewhere include users who have converted to T8 or LED fixtures or who require daylight or cool white color temperatures; this pack is specifically matched to the F40T12/930/ECO specification and 3000K output rather than lower-energy LED retrofits.

Pros & Cons

Pros

• Consistent 3000K warm white output across 15 tubes makes matching lighting simple.
• High 90 CRI improves color accuracy, useful in retail or task lighting situations.
• Long 20,000 hour life reduces replacement frequency for steady-use installations.
• Standard G13 two-pin base and 48 in length ensure compatibility with T12 fixtures.

Cons

• As fluorescent T12 tubes, they are not the most energy-efficient option compared with modern LED replacements.

Specifications

Product Type	Fluorescent Tube Light Bulb
Model Replacement	Sylvania 21376 F40T12/930/ECO
Quantity	15 light bulbs
Wattage	40 Watt
Base	G13 two-pin
Color Temperature	3000K
Length	47.76 in (48 in)
Lumen Output	3000 Lumens
Color Rendering Index	90 CRI
Rated Life	20,000 Hour Life

Our Verdict

The 15-pack Replacement for Sylvania 21376 F40T12/930/ECO is a practical, value-oriented choice for anyone needing multiple direct replacements for T12 fixtures. It provides reliable 3000K warm white light with high CRI and a long rated life, making it a smart option for facilities that prioritize consistent color and reduced maintenance rather than the ultimate in energy efficiency.

Frequently Asked Questions

Are these tubes compatible with standard T12 fixtures?
Yes, they use the standard T12 glass size and G13 two-pin base, so they fit typical F40T12 fixtures designed for 48 in tubes.

What color temperature do these bulbs provide?
They provide 3000K warm white light, suitable for warmer, less clinical lighting environments.

How long do the tubes last?
The tubes are rated for about 20,000 hours of life under normal operating conditions.