Product Overview
Sylvania 20589 FT18DL/841/ECO – 18W Dulux® L ECOLOGIC® Twin-Tube CFL | 1,250 lm | 4100K | 82 CRI | 2G11 4-Pin | 12,000 Hours | Non-Dimmable | TCLP Compliant
The Sylvania 20589 (FT18DL841ECO) is an 18W Dulux® L ECOLOGIC® twin-tube compact fluorescent lamp with a 2G11 4-pin base, delivering 1,250 lumens at 4100K (Cool White) with 82 CRI and 67 lm/W efficacy. This is the standard (non-RS) version, compatible with magnetic and electronic ballasts. This lamp is non-dimmable. ECOLOGIC® reduced-mercury technology (3.0 mg) meets federal TCLP criteria for non-hazardous waste classification. The FT18DL and FT18DL/RS are not electrically interchangeable — confirm the correct version before ordering.
|
Wattage
18W
Twin-Tube CFL
|
Lumens
1,250 lm
|
Color Temp
4100K
Cool White
|
Base
2G11
4-Pin
|
CRI
82
|
Technical Specifications
| Brand | Sylvania / LEDVANCE — Dulux® L ECOLOGIC® |
| NAED / Product Number | 20589 |
| Ordering Abbreviation | FT18DL841ECO |
| Lamp Type | Twin-Tube Compact Fluorescent (Dulux L), Single-Ended, T5 Profile |
| Base | 2G11 (4-Pin) |
| Wattage | 18W |
| Color Temperature | 4100K (841, Cool White) |
| Lumens | 1,250 lm |
| CRI | 82 |
| Luminous Efficacy | 67 lm/W |
| Dimmable | No — non-dimmable |
| Overall Length | 224.79mm (8.85″) |
| Maximum Diameter | 17mm (T5 profile) |
| Average Rated Life | 12,000 hours (HF operation, 50% survival) |
| Lamp Survival Factor (LSF) | 99% @2000h — 99% @4000h — 98% @6000h — 92% @8000h — 50% @12000h |
| Lumen Maintenance (LLMF) | 90% @2000h — 86% @4000h — 82% @6000h — 80% @8000h — 76% @12000h |
| Rated Ambient Temperature | 25°C (for max luminous flux) |
| Energy Consumption | 19.80 kWh/1000h |
| Energy Efficiency Class | A |
| Finish | Coated |
| Bulb Shape | F (T5 twin-tube) |
| Mercury Content | 3.0 mg — ECOLOGIC®; meets federal TCLP for non-hazardous waste |
| Weight | 0.12 lb |
| UPC | 0046135205897 |
| Case Quantity | 10 per case |
Product Overview
The Sylvania 20589 (FT18DL841ECO) is the standard (non-RS) version of the 18W Dulux® L ECOLOGIC® twin-tube CFL at 4100K (Cool White). At 1,250 lumens from 18W with 82 CRI and 67 lm/W efficacy, it provides crisp, cool-white light commonly specified for offices, healthcare facilities, educational institutions, and commercial interiors where a neutral-to-cool color temperature improves visual alertness and task contrast.
A key distinction for this specific CCT variant: this lamp is non-dimmable. The PDF explicitly lists Dimming: No (stated twice in the datasheet). If dimming is required for the 18W Dulux L application, the 830 (3000K) and 835 (3500K) siblings in this family do support dimming with compatible dimming ballasts — but this 841 does not. Confirm dimming requirements before ordering.
The ECOLOGIC® designation indicates 3.0 mg mercury content meeting federal TCLP criteria for non-hazardous waste classification. Average rated life is 12,000 hours with 80% lumen maintenance at 8,000 hours. As with all lamps in this family, the FT18DL and FT18DL/RS versions are not electrically interchangeable despite sharing the same 2G11 base.
Compatible Applications
- Office and commercial task lighting (4100K Cool White)
- Healthcare and clinical environments
- Educational facilities and classrooms
- Indirect fixtures and cove lighting
- Wall sconces and wall washing
- Recessed and surface-mounted fixtures with 2G11 sockets
Before Ordering – Verify
- Non-dimmable. This lamp does not support dimming on any ballast type. If dimming is required, the 830 (3000K, NAED 20587) and 835 (3500K, NAED 20588) siblings do support dimming with compatible electronic dimming ballasts.
- Standard vs. RS: This is the standard (non-RS) version, NAED 20589. The FT18DL and FT18DL/RS are not electrically interchangeable. Confirm which version the ballast and fixture require.
- Base: 2G11 (4-pin). Confirm the fixture socket is specifically 2G11.
- CCT: This lamp is 4100K (841, Cool White). The 18W Dulux L ECO family is also available in 3000K (830, NAED 20587) and 3500K (835, NAED 20588).
- Overall length: 224.79mm (8.85″). Confirm the fixture accommodates this length.
Safety and Handling Guidelines
- This lamp contains mercury (3.0 mg, ECOLOGIC®). If broken, ventilate the area and follow EPA fluorescent lamp breakage cleanup guidelines; do not vacuum broken pieces
- Recycle through a designated lamp recycling program per applicable local, state, and federal regulations
- Disconnect power before installing or replacing the lamp
- Handle by the base; avoid contact with the glass tubes
Compliance
- ECOLOGIC® — meets federal TCLP criteria for non-hazardous waste classification (3.0 mg Hg)
- Contains mercury — dispose of per local, state, and federal regulations
- Energy Efficiency Class: A
- 2G11 4-pin base for magnetic and electronic ballasts (non-dimmable)
Ordering Information
- NAED: 20589
- Ordering Abbreviation: FT18DL841ECO
- UPC: 0046135205897
- Case Quantity: 10 per case
- 835 (3500K) sibling: 20588 (FT18DL835ECO, dimmable)
- 830 (3000K) sibling: 20587 (FT18DL830ECO, dimmable)
- 835 RS sibling: 20594 (FT18DL/835/RS/ECO) — not interchangeable with standard versions
For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.
