Sylvania 21120 CF13DD/841/ECO

The Sylvania Dulux D ECOLOGIC  (CF13DD/841/ECO) P/N 21120 Lamp is a commercial-grade, high-efficiency 13-watt compact fluorescent bulb engineered for shallow architectural downlights, public wall sconces, commercial recessed ceiling troffers, and low-profile path luminaires. Delivering 750 initial lumens of crisp 4100K cool white illumination, this quad-tube T4 module utilizes high-performance rare-earth tri-phosphors to achieve an 82 CRI color accuracy baseline. Outfitted with an integrated internal starter capsule and a specialized GX23-2 2-pin plug-in base, it provides a reliable 10,000-hour rated average service life when driven by matching magnetic core-and-coil ballast networks.

ADL Supply Expert Application & Replacement Guide

The Sylvania CF13DD/841/ECO compact plug-in lamp is an established industry property maintenance standard specified widely for high-traffic office stairwells, retail changing displays, commercial restrooms, and public architectural lobbies. Featuring a symmetrical quad-tube design configuration, it projects continuous radial illumination over a compressed physical footprint, providing property managers with two-thirds the total mechanical length of single-tube compact lamps while optimizing visual depth across shallow flush-mount fixtures.

Critical Magnetic Control Tracking and Base Alignment Boundaries: Field technicians executing facility upkeep sweeps must verify existing hardware restrictions prior to checking out their cart. This 2-pin module incorporates an integrated internal glow-switch starter element, mandating operation strictly on approved magnetic core-and-coil ballast networks. Attempting to link this 2-pin lamp to modern electronic high-frequency fluorescent ballasts or 4-pin dimming tracks will prompt terminal circuit non-ignition or rapid destruction of solid-state control gear.

Furthermore, check the socket receiver profile to prevent mechanical mismatch loops: the GX23-2 base features a dual-channeled block molding with side alignment keys. It cannot be forced into a single-tube G23 socket casing, which uses a flat central retention tab. Press the base firmly straight down into the plug until the plastic alignment wings lock solidly with your lampholder walls.

Detailed Product Specifications

• Brand Name: Sylvania (OSRAM Sylvania Group / Dulux® D Division)
• Product Series Line: Dulux® Double T4 ECOLOGIC® Compact Fluorescent Line
• Sylvania Factory Product Order Code SKU: 20708
• Manufacturer Description Nomenclature: CF13DD/841/ECO (Replaces legacy text layout CF13DD841ECO)
• UPC Barcode Number (GTIN-12): 046135207082
• Core Technology Class: Compact Fluorescent (CFL) — Low-Pressure Gas-Discharge Quad Tube
• Primary Control Requirement: 13W Magnetic Core-and-Coil Fluorescent Ballast Kit
• Operational Power: 13 Watts
• Integrated Base Hardware Components: Glow-Switch Ignition Starter and Radio Interference Suppressor
• Initial Luminous Brightness: 750 Lumens (Post standard 100-hour seasoning burn)
• Sustained Lumen Maintenance Profile: 85% Luminous Retention across rated life boundaries
• Luminous Efficacy Ratio: 58 Lumens per Watt (LPW)
• Color Temperature Configuration: 4100K Cool White (841 Rare-Earth Tri-Phosphor Coating)
• Color Rendering Index (CRI): 82 Ra
• Base Type Configuration: GX23-2 (2-Pin Plug-In with Molded Side Keyways and Dual-Channel Center Block)
• Glass Tube Geometry Class: T4 Double Miniature Tube Profile
• Maximum Overall Length (MOL): 4.60" Inches (117.0mm actual length tip-to-base)
• Rated Average Service Lifespan: 10,000 Hours (Under constant voltage line conditions)
• Chassis Burn Position Limit: Universal — Operates reliably in any flat mounting angle

Operation, Safety & Mounting Compliance

High-Efficacy Phosphor Engineering and Ambient Visual Tones

This compact gas-discharge lamp routes electrical capacity through high-purity rare-earth phosphors to convert internal ultraviolet energy fields into visible light safely, processing a dramatic utility savings compared to traditional incandescent bulbs of equivalent lumen outputs. While this product page indexes the crisp 4100K cool white commercial standard, the Sylvania Dulux® D family manufactures matching footprints spanning 2700K warm, 3000K soft white, and 3500K neutral spectrum bands to accommodate specific ambient interior requirements.

ECOLOGIC® Low-Mercury Dosing and Safe Bulk Recycling Protocols

Sylvania ECOLOGIC® manufacturing standards certify that this quad-tube module utilizes a metered, ultra-low mercury vapor dosing fill weight combined with lead-free glass stems. This balanced execution enables spent modules to pass the strict Federal Toxic Characteristic Leaching Procedure (TCLP) test guidelines per NEMA standards, mitigating hazardous heavy-metal tracking risks. However, as an electrical discharge device, spent bulbs must be processed through verified regional commercial bulk recycling repository centers during property maintenance sweeps rather than mixed with standard municipal solid landfill lines.

Commercial Equipment Industry Cross-References

This 13W 2-pin GX23-2 lamp serves as a direct drop-in replacement or equivalent for the following lines:

• GE Lighting Alternative: Biax D 13W — F13DBX/841/ECO / Order Code 97592
• Philips Lighting Match: PL-C 13W/841/2P / USA Catalog Product Code 38311-7
• Satco Hygrade Reference: S6723 / CF13DD/841 Double Tube Line

Bulk Commercial Lighting Supply & Project Support

ADL Supply handles volume distribution shipments, multi-pack logistics, and contractor project quotes for procurement teams, schools, and warehouse facilities nationwide.

For specialized contractor pricing tiers, job-site pallet deliveries, or comprehensive submittal documentation, contact our support team directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.

Specification Sheet: View Manufacturer Spec Sheet