Product Overview
The Philips 34508-2 PL-L 24W/840/4P Twin-Tube Lamp is a premium, high-efficiency compact fluorescent (CFL) light source engineered for low-profile commercial and architectural luminaires. Operating at 24 watts, this professional-grade linear plug-in lamp delivers 1,800 initial lumens of crisp 4100K cool white light with an 82 CRI for enhanced structural visibility. Built with an industry-standard 2G11 4-pin base and a clear glass twin-tube orientation, it offers an extended 20,000-hour rated average service life when paired with compatible high-frequency electronic ballasts.
| Wattage 24W Twin-Tube CFL | Color Temp 4100K Cool White | Brightness 1,800 Initial Lumens | Base Type 2G11 4-Pin Plug-In | Rated Life 20,000 Avg. Hours |
ADL Supply Expert Application & Replacement Guide
The Philips PL-L 24W/840/4P is an architectural-grade replacement lamp engineered for commercial modular troffers, shallow recessed ceiling pans, perimeter wall-washing channels, and low-profile healthcare corridors. Its parallel side-by-side twin-tube framework allows luminaire designers to extract high-lumen, uniform light output from short, compact fixture tracks, maximizing floor foot-candles across space-constrained ambient lighting layouts.
Ballast and Socket Maintenance Guidelines: This lamp requires a compatible, externally mounted high-frequency electronic ballast to limit operating currents. It is not self-ballasted and cannot be wired directly to line voltage. Field technicians should verify that target fixtures utilize standard **4-pin 2G11 push-in sockets** featuring an auxiliary metal retention clip to support the lamp's horizontal length. Measuring a maximum overall length of 12-2/3 inches, it serves as a direct drop-in replacement across multi-lamp ballast networks configured for 24W long compact fluorescent lamps.
Detailed Product Specifications
- Brand: Philips Lighting
- Product Series Line: PL-L Long Twin-Tube Series
- Philips Order Code Catalog SKU: 34508-2 (345082)
- Ordering Description Nomenclature: PL-L 24W/840/4P
- UPC Barcode Number: 046677345082
- Core Technology: Linear Compact Fluorescent (CFL)
- Operational Wattage: 24 Watts
- Initial Luminous Flux: 1,800 Lumens
- Color Temperature Configuration: 4100K Cool White
- Color Rendering Index (CRI): 82
- Bulb Finish / Envelope Profile: Clear Glass Twin-Tube
- Base Type Configuration: 2G11 (4-Pin Straight Inline Alignment)
- Maximum Overall Length (MOL): 12-2/3" Inches (321.6mm)
- International ILCOS Code: FSD-24/41/1B-E-2G11
- Rated Average Lifespan: 20,000 Hours
- Manufacturing Origin: Belgium
Operation, Safety & Mounting Compliance
Electrical Voltage and External Ballast Requirements
This twin-tube plug-in module operates strictly on certified electronic control gear. Connecting a 2G11 lamp directly to 120V or 277V line currents will cause immediate electrode blowout, rendering the lamp permanently inoperable and introducing an electrical short circuit hazard. Always verify your system ballast configuration matches the 24W CFL operational parameters before energizing the electrical line loop.
Mercury Content and Environmental Disposal Regulations
This fluorescent component utilizes small, trace amounts of sealed mercury elements to sustain stable arc ignition over its long 20,000-hour duty cycle. Large-scale maintenance operations or commercial facility retrofits must manage spent lamps under structured hazardous waste protocols. Utilizing automated commercial bulk recycling programs rather than standard refuse channels is recommended to ensure compliance with municipal environmental guidelines.
Commercial Ballast Industry Cross-References
- Sylvania Quicktronic: FT24DL/840 / QTP 1x24CF/UNV
- GE Lighting: F24BX/840 / Biax Long Series
- Philips Advance compatible control gear: ICF-2S26-H1-LD SmartMate Series
Bulk Commercial Lighting Supply & Project Support
ADL Supply handles volume logistics management, tiered commercial contractor pricing models, and full pallet project quotes for facility teams, municipal procurement agents, and electrical accounts nationwide.
For professional contractor tiered discounts, full pallet freight distributions, or dedicated technical submittal specification sheets, reach our support center directly at 1-800-235-3489. We are your commercial supply partners as a dedicated wholesale Lighting Distributor In Doral, Florida.
