SYLVANIA 20583 | FT36DL/841/ECO Dulux® L 36W Compact Fluorescent Lamp

The Sylvania 20583 (FT36DL/841/ECO) is a commercial-grade, space-saving **36W twin-tube compact fluorescent lamp** from the high-efficiency **Dulux® L** and **Ecologic®** product families. Tailored specifically for low-profile modular luminaires, architectural coves, and shallow 2x2 recessed fixtures, this premium lamp is engineered with a standard **2G11 4-Pin plug-in base**. Delivering an intensive **2,900 initial lumens** of crisp **4100K Cool White** light, it features an advanced phosphor layer that secures a solid **80 CRI** color accuracy. With an operational rated life of **12,000 hours**, this eco-conscious, low-mercury lamp maximizes energy savings while cutting commercial facility maintenance and relamping cycles.

High-Efficiency Twin-Tube Design and Ecologic® Innovation

Sylvania Dulux® L compact fluorescent lamps incorporate an optimized dual-tube configurations that focuses high lumen output within small fixture dimensions. Generating a reliable stream of bright illumination, this design ensures excellent structural brightness for professional workplace applications. As an official **Ecologic®** designated product, this lamp is manufactured with a reduced mercury layout and lead-free construction to pass strict environmental standards. Its green design helps facility operations meet corporate sustainability initiatives and simplifies regional environmental oversight.

• Extended Maintenance Longevity: Engineered to yield an operational runtime up to **12,000 hours**, drastically lowering replacement overhead and maintenance cycles in high-traffic settings.
• Comfortable 80 CRI Spectrum: Features a color rendering index of 80, providing clean, bright visual clarity and consistent color appearance across wide layouts.
• Compact Low-Profile Profile: Built with a narrow 0.630-inch tube diameter and a sleek 16.6-inch total geometry, making it perfect for shallow architectural luminaires.
• High System Efficiency: Delivers an impressive 2,900 initial lumens from just 36 watts, optimizing system efficacy when paired with commercial ballast frameworks.

Technical Specifications

• Brand: Sylvania
• Product Code / NAED: 20583
• Ordering Abbreviation: FT36DL/841/ECO
• Series / Product Family: Dulux® L (Ecologic®)
• Technology Type: Compact Fluorescent (CFL) - Long Twin Tube
• Wattage: 36W
• Base Type: 2G11 (Single-Ended 4-Pin Plug-In)
• Initial Lumens: 2,900 lm (Evaluated after 100 benchmark hours)
• Color Temperature: 4100K (Cool White Spectrum)
• Color Rendering Index (CRI): 80
• Average Rated Lifespan: 12,000 Hours
• Maximum Overall Length (MOL): 16.6 Inches
• Diameter: 0.630 Inches
• UPC / EAN: 46135205835

Ballast Operation & System Integration Guidelines

• Ballast Requirements: This Dulux L lamp is not self-ballasted and must be run exclusively on compatible external hardware, including electronic, magnetic, or specialized dimming ballasts designed for 4-pin 2G11 applications.
• System Matching: Before installation, cross-reference fixture constraints and check electrical parameters against the official manufacturer specification sheet to guarantee safe, optimal operation.
• Dimmable Functionality: Fully capable of architectural dimming applications when integrated with standard electronic high-frequency dimming ballasts certified for 36W 2G11 lamps.

Safety and Disposal Controls

Note on Environmental Safety: This compact fluorescent lamp contains a small amount of mercury. It must be handled, managed, and disposed of in accordance with local, state, and federal recycling regulations. Avoid breaking the outer glass tubes during handling, and verify RoHS compliance criteria before completing large facility refits.

Recommended Commercial Applications

• Office & Corporate Workspaces: Tailored for 2x2 modular troffers, modern task lighting fixtures, and low-profile layout arrays.
• Healthcare & Institutional Facilities: Provides wide, dependable, crisp illumination perfect for hospital corridors, treatment areas, and reception zones.
• Retail & Hospitality Spaces: Excellent for accent shelving, indirect architectural coves, and wall washers requiring true-color ambient light.