Sylvania Dulux® T/E IN ECOLOGIC® 20883 (CF42DT/E/IN/841/ECO) Lamp — 42W | 4100K Cool White | 3,200 Lumens | GX24q-4 4-Pin Base

The Sylvania Dulux® T/E IN ECOLOGIC® 20883 (CF42DT/E/IN/841/ECO) Lamp is a commercial-grade, high-output triple-tube amalgam compact fluorescent lamp (CFL) engineered for high-density architectural recessed downlights, commercial area troffers, corridor wall sconces, and insulated ceiling track luminaires. Delivering 3,200 initial lumens of crisp 4100K cool white illumination, this premium 42-watt plug-in module utilizes an advanced rare-earth tri-phosphor coating to achieve an excellent color rendering index of 82 CRI. Outfitted with an industry-standard GX24q-4 4-pin electronic base and structured with a low mercury fill weight, it provides a dependable 12,000-hour rated average service life when driven by certified programmed-start electronic ballasts.

ADL Supply Expert Application & Replacement Guide

The Sylvania Dulux® T/E IN 20883 compact fluorescent lamp is an established commercial facility maintenance baseline specified universally across institutional complexes, public commercial buildings, high-traffic corporate lobbies, and architectural accent spaces. Delivering a focused 4100K cool white visual field profile, this clean spectrum renders neutral, high-contrast environments that improve employee focus, visibility, and occupant comfort while maintaining exceptional lumen preservation across continuous commercial operations.

The defining engineering element of this module is its integrated "IN" amalgam formulation. Unlike standard compact fluorescent tubes that experience heavy lumen degradation when trapped inside airtight luminaire trims, this advanced capsule utilizes an integrated mercury-amalgam chemistry matrix. This configuration actively stabilizes internal vapor pressures across a broad thermal loop, maintaining full light projection inside deep downlight cans where interior casing parameters reach **ambient operating temperatures of 35°C (95°F) up to 65°C (149°F)** in the base-up position.

Critical Programmed-Start Electronic Ballast Requirements and Keyed Base Boundaries: Licensed electrical contractors and property maintenance crews executing routine layout upgrades must monitor hardware boundaries closely prior to checkout: this 4-pin capsule is not self-ballasted and requires an un-dimmed external programmed-start electronic ballast rated for 42W GX24q-4 circuits to function safely. It is completely incompatible with legacy magnetic ballasts or lower-wattage 26W/32W (GX24q-3) sockets.

Programmed-start ballasts preheat the internal cathode structures prior to arc ignition—ensure the fixture employs shunted lampholders where socket contact contacts connect correctly. Furthermore, the GX24q-4 base incorporates a specific keyed mechanical alignment tab. Never attempt to force this 42W bulb into alternate 26W or 32W sockets, as cross-wattage mismatching will cause severe non-ignition flickering, inducing rapid filament degradation that destroys the tube end seals.

Detailed Product Specifications

• Brand Name: Sylvania (OSRAM Sylvania Product Portfolio / ECOLOGIC® Commercial Series)
• Product Series Line: Dulux® T/E IN Amalgam Triple-Tube Compact Fluorescent Family
• Sylvania Factory Product Order Code SKU: 20883
• Manufacturer Description Model Nomenclature: CF42DT/E/IN/841/ECO
• Abbreviation Code: CF42DTEIN841ECO
• NEMA Generic Product Specification Code: CFM42W/GX24Q/841
• Core Technology Class: Low-Pressure Gaseous Discharge — Amalgam Compact Fluorescent (T4 Triple-Tube 3U Layout)
• Ignition Starting Method Classification: Programmed Rapid Start Only (Electronic Ballast Controlled)
• Primary Control Requirement: External 42W Programmed-Start Ballast Outfitted with EOL Shutdown Protection
• Operational Lamp Power Draw: 42 Watts
• Nominal Running Arc Voltage Drop: Ballast Managed Sustaining Operating Voltage
• Initial Luminous Brightness: 3,200 Lumens (Post standard 100-hour laboratory seasoning burn)
• Mean Luminous Lifecycle Output: 2,670 Lumens (Calibrated at 40% of rated average lamp service life)
• Systemic Luminous Efficacy: 76.2 Lumens per Watt (LPW)
• Color Temperature Configuration: 4100K Cool White (841 Tri-Phosphor rare-earth chemical blend; corrected classification)
• Color Rendering Index (CRI): 82 Ra (High Commercial Visibility Task Accuracy Profile)
• Base Type Configuration: GX24q-4 (Single-Ended 4-Pin keyed plug-in base with center alignment pin)
• Nominal Bulb Profile Diameter: T4 Shape Casing Profile (12.0mm actual triple-tube cylinder width)
• Rated Average Service Lifespan: 12,000 Hours (Based on standard 3-hour industrial cycling shifts)
• Chassis Burn Position Limit: Universal — Optimized for Base-Up vertical tracking profiles
• Environmental Assessment Rating: Ecologic® Brand Standard — EPA TCLP Compliant for reduced toxic waste leaching

Operation, Safety & Mounting Compliance

High-Frequency Low-Flicker Electronic Current Damping

When retrofitted onto approved high-efficiency electronic ballasts, this lamp processes power over precise high-frequency square waves, completely eliminating the visual strobe flicker and loud 60Hz hum characteristic of vintage magnetic ballasts. This solid-state control matrix maintains uniform mercury vapor distribution path lines within the clear glass casing, ensuring stable lumen delivery without causing localized overheating near the terminal base pins throughout extended commercial operations.

Commercial Equipment Industry Cross-References

This premium 42W GX24q-4 compact triple-tube lamp serves as a direct drop-in replacement or alternative for the following lines:

• GE Lighting Alternative: F42TBX/841/A/ECO Biax T/E Amalgam Series / Catalog Code 97636
• Philips Lighting Match: PL-T 42W/841/4P/ALTO MasterColor Single-Ended Line / USA Product Code 149021
• Osram Reference Line: Dulux T/E 42W/841 Plus High Efficacy 4-Pin Technical Replacement
• Satco Hygrade Reference: CFT42W/4P/841 Commercial Grade Triple-Tube Code S8349
• Ushio Reference Match: Ultra T/E CF42TE/841 Compact Fluorescent Architectural Series

Bulk Commercial Lighting Supply & Project Support

ADL Supply delivers commercial-volume logistical fulfillment, tiered commercial contractor discounting strategies, and full pallet project quoting options to electrical accounts across the United States.

For formal wholesale inquiries, volume pricing modifications, or manufacturer spec sheet documentation, reach our commercial branch directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.