Sylvania Linear Fluorescent Tu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6.12
Sylvania Linear Fluorescent Tube Lamp, T5/T8 Bi-Pin Base

Sylvania Linear Fluorescent Tube Lamp, T5/T8 Bi-Pin Base

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Model: 21366

In Stock (leaves warehouse same day if ordered before 3pm ET)

$6.12
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Sylvania Linear Fluorescent Tube Lamp, T5/T8 Bi-Pin Base

The Sylvania Linear Fluorescent Tube Lamp is a family of bi-pin fluorescent tubes available across T5 and T8 tube diameters, with wattage options spanning T5 - 8 Watt, T5 - 13 Watt, T8 - 15 Watt, and T8 - 30 Watt to match a range of fixture requirements. Every lamp in this family is built on a bi-pin base configuration — G5 Miniature Bi-Pin on the T5 versions and Medium Bi-Pin on the T8 versions — and delivers a 60 CRI rating for standard-grade color rendering in general and task lighting settings. Whether you need the slim-profile footprint of a T5 tube for compact fixtures or the wider, higher-output T8 format for general commercial illumination, this Sylvania lamp family provides a straightforward, code-compliant replacement option across common fluorescent fixture types.

Key Features

  • Wattage Options: Available in T5 - 8 Watt, T5 - 13 Watt, T8 - 15 Watt, and T8 - 30 Watt to fit a variety of fixture wattage requirements.
  • Tube Diameter: Offered in both T5 and T8 tube diameters, giving specifiers flexibility between compact and standard-format fluorescent fixtures.
  • Base Type: Bi-Pin base construction — G5 Miniature Bi-Pin for T5 lamps and Medium Bi-Pin for T8 lamps — for compatibility with corresponding fixture sockets.
  • Color Rendering: 60 CRI across the family for consistent, standard-grade color rendering in general illumination applications.
  • Rated Lamp Life: Average rated life of 7500 hours for dependable, long-term service in commercial and facility fixtures.
  • Fixture Versatility: T5 options suit compact, space-constrained luminaires such as under-cabinet and display fixtures, while T8 options serve general-purpose commercial and industrial fluorescent fixtures.
  • Case Packaging: Supplied 24 units per case, with a case footprint of 5.000 inches width by 7.750 inches length for organized stockroom storage.

Technical Specifications

  • Lamp Type: T5 / T8 Fluorescent
  • Wattage Range: T5 - 8 Watt, T5 - 13 Watt, T8 - 15 Watt, T8 - 30 Watt
  • Base: G5 Miniature Bi-Pin (T5) / Medium Bi-Pin (T8)
  • CRI: 60
  • Average Rated Life: 7500 hours
  • Units Per Case: 24
  • Case Dimensions: 5.000 inches (width) x 7.750 inches (length)

Typical Applications

  • Under-Cabinet and Task Lighting Fixtures (T5)
  • Display Case and Signage Illumination (T5)
  • General Commercial and Office Fluorescent Fixtures (T8)
  • Retrofit Replacement in Bi-Pin Base Fluorescent Fixtures
  • Compact and Standard-Format Luminaires in Commercial Spaces

Why Sylvania?

Sylvania is a longstanding name in lighting, and this bi-pin fluorescent tube family reflects the brand's focus on delivering dependable, spec-accurate light sources across common T5 and T8 fixture formats. With a defined wattage lineup, consistent 60 CRI rating, and a 7500-hour average rated life, this Sylvania lamp family gives electrical professionals and facility managers a straightforward option for maintaining and retrofitting fluorescent fixtures. Choose the wattage and tube diameter that matches your fixture for a precise, code-compliant fit.

Manufacturer Resources

Product Specs

Product Type:
Fluorescent Lamp
Product Wattage:
8W
Bulb Base:
Bi-Pin
Lumens:
390
CRI:
60
Light Temperature:
4200K
Department:
Electrical
Product Group:
Lighting
Product Subgroup:
Lamps & Ballasts
list_batch:
SYL-20260924
Average Rated Life:
7500 hours
Color Rendering Index:
60 color rendering index
Base:
Medium Bi Pin
Case Width:
5.000 inches
Bulb Type:
T8
Units Per Case:
24
Case Length:
7.750 inches

Sylvania 21366 – Frequently Asked Questions

1) Will a Sylvania T5 bi-pin lamp fit a T8 fixture socket?
No. The Sylvania T5 lamps use a G5 miniature bi-pin base and the T8 lamps use a medium bi-pin base, so the two are not interchangeable in the same socket. Match the tube diameter in your fixture first, then the wattage: the family runs T5 at 8W and 13W, T8 at 15W and 30W.
2) Which Sylvania part number do I order for a 15 watt T8 bi-pin tube?
Sylvania 21616 is the T8 15 watt version. The rest of the family: 21366 for T5 8W, 21368 for T5 13W, and 23116 for T8 30W. All four carry a medium or miniature bi-pin base depending on diameter.
3) Can I use these Sylvania fluorescent lamps as a direct replacement in my existing fixtures?
Yes, as long as the fixture socket and wattage match. These are standard bi-pin fluorescent tubes meant for retrofit replacement in bi-pin base fixtures, so pull the old lamp, read its diameter (T5 or T8) and wattage off the etch, and order the matching part. A fluorescent lamp still needs the fixture's existing ballast to operate; these are not direct-wire LED tubes.
4) What color temperature are these Sylvania bi-pin fluorescent tubes, and will they match my existing tubes?
These are 4200K, a cool white. If the other tubes in the room are 3500K or 4100K, the color will read slightly different side by side, which matters most in open ceiling grids where two lamps sit in the same fixture. CRI is 60, standard grade for general and task lighting rather than color-critical work.
5) How much light does the 8 watt Sylvania T5 bi-pin lamp put out?
The 8 watt T5 is rated 390 lumens. That output level is why the T5 versions are used in under-cabinet, task, display case, and signage fixtures rather than as general room lighting. For broader commercial illumination, step up to the T8 15W or 30W.
6) How many Sylvania bi-pin fluorescent tubes come in a case?
24 lamps per case, with a case footprint of 5.000 inches by 7.750 inches. That quantity works well for an MRO stockroom standardizing one wattage across a building, since you are replacing a fluorescent tube roughly every 7500 operating hours.
How fast can I get the Sylvania 21366 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sylvania 21366 come with a warranty?
Absolutely. The Sylvania 21366 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sylvania 21366?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Sylvania 21366 from ZenSupply?
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