Sylvania 20877 Dulux T/E/IN Co...
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Sylvania 20877 Dulux T/E/IN Compact Fluorescent Lamp, 18-Watt 4-Pin, 3500K

Sylvania 20877 Dulux T/E/IN Compact Fluorescent Lamp, 18-Watt 4-Pin, 3500K

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Model: 20877

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

$6.61
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Sylvania 20877 Dulux T/E/IN Compact Fluorescent Lamp, 18-Watt 4-Pin, 3500K

The Sylvania 20877 is a Dulux® T/E/IN Ecologic® compact fluorescent lamp built on a T4 triple U-tube amalgam design with a 4-pin GX24q-2 base. Rated at 18-Watts, this lamp delivers 1164 lumens at a 3500K color temperature with an 82 CRI, making it a reliable choice for commercial and general-purpose lighting applications that require a dedicated ballast fixture. The amalgam technology helps maintain consistent light output across a range of operating temperatures, and the Ecologic® designation reflects Sylvania's reduced-mercury lamp formulation. This lamp is intended as a direct replacement or refresh option for existing 4-pin CFL fixtures using the GX24q-2 base configuration.

Key Features

  • Lamp Type: T4 triple U-tube amalgam compact fluorescent lamp for compact, high-output fixture applications.
  • Base Type: 4-Pin GX24q-2 base for compatibility with dedicated ballast CFL fixtures.
  • Wattage: 18-Watts for efficient energy use compared to incandescent alternatives.
  • Light Output: 1164 lumens delivering consistent, usable brightness for general lighting needs.
  • Color Temperature: 3500K neutral white color rendering for balanced ambient lighting.
  • Color Rendering Index: 82 CRI for accurate, true-to-life color rendering in commercial spaces.
  • Series: Dulux® T/E/IN, part of Sylvania's established compact fluorescent lamp family.
  • Reduced Mercury: Ecologic® formulation designed to minimize environmental impact.

Technical Specifications

  • Lamp Type: T4 Triple U-Tube Amalgam Compact Fluorescent Lamp
  • Base: 4-Pin GX24q-2
  • Wattage: 18-Watt
  • Lumens: 1164-Lumens
  • Color Temperature: 3500K
  • CRI: 82 CRI
  • Series: Dulux® T/E/IN Ecologic®

Typical Applications

  • Commercial Office and Retail Lighting
  • Dedicated Ballast Compact Fluorescent Fixtures
  • Downlights and Recessed Fixtures Using GX24q-2 Base
  • General Ambient and Task Lighting
  • Replacement Lamp for Existing 4-Pin CFL Fixtures

Why Sylvania?

Sylvania's Dulux® T/E/IN Ecologic® series combines proven amalgam CFL technology with a reduced-mercury formulation, giving facility managers and electricians a dependable, energy-efficient lighting option for standard 4-pin fixtures. With consistent 3500K color temperature and 82 CRI performance, the 20877 supports reliable, code-compliant lighting for professional commercial installations.

Manufacturer Resources

Product Specs

list_batch:
SYL-20260928
Product Type:
Compact Fluorescent Lamp
Product Wattage:
18W
Lumens:
1164
Light Temperature:
3500K
CRI:
82
Bulb Base:
GX24q-2
Series:
Dulux T/E/IN Ecologic
Department:
Electrical
Product Group:
Lighting
Product Subgroup:
Lamps & Bulbs
Base:
GX24Q-2

Sylvania 20877 – Frequently Asked Questions

1) Will the Sylvania 20877 CFL fit my 4-pin GX24q-2 socket?
Yes. The Sylvania 20877 uses a 4-pin GX24q-2 base, which is the keyed 4-pin base found on dedicated-ballast CFL downlights and recessed cans. The GX24q keying is pin-notched by wattage group, so a GX24q-2 lamp seats only in a GX24q-2 socket. If your existing lamp reads GX24q-3 (typically 32W) or GX24q-1 (13W), this one will not drop in.
2) Does the 18W Dulux T/E/IN need a ballast, or can I wire it direct?
It needs a ballast. The 20877 is a 4-pin CFL with no integrated ballast, so it only operates in a fixture with a dedicated CFL ballast matched to an 18W lamp. There is no screw base and no self-ballasted option here. If your fixture has an Edison socket, this is the wrong lamp.
3) Is 3500K going to match the other lamps in my building?
3500K is neutral white, between the warmer 2700K/3000K look and the cooler 4100K. It matches other 3500K lamps on the same floor plate. Mixing it with 4100K lamps in the same ceiling grid will read as a visible color difference, so for a fleet relamp, pull one existing lamp and check its color code before you order a case.
4) How much light does the Sylvania 20877 actually put out?
1164 lumens at 18 watts, with 82 CRI. That output is in the range fixture designers use for office and retail downlights, and the 82 CRI is enough for accurate color in commercial space without being a high-CRI specialty lamp. For a like-for-like relamp of an 18W triple-tube fixture, output will be the same as what came out.
5) Why choose an amalgam CFL over a standard triple-tube lamp?
The 20877 is a T4 triple U-tube amalgam lamp. Amalgam holds mercury vapor pressure steadier, so light output stays more consistent across a wider range of operating temperatures. That matters in enclosed or tight recessed cans and in cooler spaces where a non-amalgam CFL dims off or runs up slowly.
6) What part number do I order for the Sylvania 18W 3500K 4-pin CFL?
Order Sylvania 20877. That is the manufacturer part number for the Dulux T/E/IN Ecologic 18W, GX24q-2, 3500K lamp. Note the number covers one color temperature only, so if your spec calls for 4100K it is a different Sylvania number.
7) Is this a low-mercury lamp for disposal purposes?
The 20877 carries Sylvania's Ecologic designation, which is their reduced-mercury lamp formulation. It is still a fluorescent lamp containing mercury, so it goes through your normal lamp recycling stream, not the trash.
8) Can I use the Sylvania 20877 in a dimming fixture?
Only if the fixture already has a dimming CFL ballast. Dimming on a 4-pin CFL is a function of the ballast, not the lamp, and the 20877 is a standard 18W GX24q-2 lamp with no dimming hardware of its own. On a fixed-output ballast it runs at full output.
How fast can I get the Sylvania 20877 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 20877 come with a warranty?
Absolutely. The Sylvania 20877 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 20877?
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 20877 from ZenSupply?
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