SYLVANIA 21134 | CF13DS/841/ECO Dulux® S 13W 4100K 2-Pin Plug-In Compact Fluorescent Lamp

The Sylvania 21134 (CF13DS/841/ECO) is a commercial-grade **13W compact fluorescent single twin-tube replacement lamp** from the high-efficiency Dulux® S and Ecologic® product families. Engineered for traditional plug-and-play architectural hardware, this **T4 sub-compact bulb** features a standard **GX23 2-pin base** equipped with a built-in internal glow-switch starter. Delivering **720 initial lumens** of crisp, clear **4100K Cool White (841)** illumination with an **82 CRI** color rendering accuracy, it runs seamlessly on dedicated magnetic ballast circuits. With an extended **10,000-hour average rated life** and full TCLP environmental safety compliance, this lamp serves as a direct professional upgrade, replacing legacy Sylvania item number 20331.

Integrated Starter Design and Sustainable Building Advantages

Sylvania Dulux® S plug-in lamps are optimized to minimize structural operating costs while maintaining comfortable ambient brightness levels. The structural base of the **GX23 configuration** contains an integrated, interference-suppressed radio glow starter and condensation capacitor, allowing the lamp to strike smoothly and flicker-free on simple line-frequency magnetic chokes. As an official **Ecologic®** branded product, this single twin-tube lamp passes strict Federal TCLP (Toxicity Characteristic Leaching Procedure) testing benchmarks. This ensures a low mercury formulation that minimizes total greenhouse emissions over its lifetime, helping commercial facilities meet strict environmental corporate building mandates.

• Substantial System Efficacy: Yields a high operational efficiency profile, drawing significantly less electricity than a standard incandescent lamp while delivering equivalent ambient luminaire output.
• High-Retention Phosphor Base: Delivers crisp, stable color metrics throughout its lifecycle, preventing the rapid lumen depreciation or color fading common to budget-grade plug-in bulbs.
• Universal Burn Position: Formulated to ignite stably in any physical orientation (horizontal, base-up, or base-down) without compromising lifespan, striking time, or mercury-vapor distribution.
• Universal Cross-Brand Matching: Direct drop-in premium replacement for major industry components, including Philips PL-S 13W/841/2P/ALTO and GE F13BX/841/ECO.

Technical Specifications

• Brand: Sylvania
• Product Code / NAED: 21134
• Ordering Abbreviation: CF13DS/841/ECO
• Legacy Code Cross-Reference: 20331
• Series / Product Family: Dulux® S (Ecologic® Series)
• Technology Type: Compact Fluorescent (Plug-In CFL)
• Tube Geometry: T4 Single Twin-Tube
• Wattage: 13W
• Base Type: GX23 (2-Pin Plug-in with Internal Condenser & Starter)
• Circuit Specification: Dedicated Magnetic Ballast Only
• Initial Lumens (at 25°C): 720 lm (Evaluated after 100 stabilizing burn hours)
• Color Temperature: 4100K (Cool White / 841 Spectrum)
• Color Rendering Index (CRI): 82
• Average Rated Lifespan: 10,000 Hours (Based on standard 3-hour switching cycles)
• Maximum Overall Length (MOL): 7.10 Inches (180.3 mm)

Recommended Commercial Applications

• Recessed Downlights & Sconces: Populates interior architectural wall sconces, hotel corridor downlights, and decorative accents.
• Task & Showcase Displays: Fits inside under-cabinet task fixtures, showcase lighting panels, and localized workspace enclosures.
• Safety Exit Signs: Serves as a long-life light source for commercial building exit pathways and public egress fixtures.

System Installation & Ballast Safety Guidelines

• Magnetic Ballast Compatibility: This 2-pin CFL variant is designed strictly for operation on compatible magnetic ballasts or low-frequency control circuits. Attempting to install this module into a fixture wired for high-frequency 4-pin electronic lines will fail to strike or permanently compromise the internal starter.
• Replacement Requirements: Ensure power lines are cut at the breaker panel and allowed to cool completely prior to insertion. Firmly press the GX23 base into the socket channel until the retention clips click into place for a secure, grounded fit.