PHILIPS 42W PL-T 2700K | Triple Tube Compact Fluorescent | GX24q-4 4-Pin Base | ALTO

Philips PL-T 42W/827/4P/ALTO (Order Code: 149021) is a high-output triple-tube compact fluorescent lamp designed for high-performance commercial and architectural lighting. Delivering a powerful 3,200 lumens of warm 2700K light, this lamp provides the cozy, inviting atmosphere of traditional incandescent bulbs with the energy efficiency of advanced fluorescent technology. Featuring a 4-pin GX24q-4 base and ALTO® low-mercury technology, it is an ideal solution for recessed downlights and large-format decorative fixtures in hospitality and retail environments.

Product Overview

The Philips PL-T 42W series represents the pinnacle of compact fluorescent light output. The "827" color rendering provides a warm, flattering light (CRI 82) that enhances wood tones and warm interior colors, making it a staple for hotel lobbies, restaurants, and residential common areas. Built with ALTO® technology, these lamps contain significantly less mercury than standard industry alternatives, meeting EPA TCLP requirements for non-hazardous waste. Optimized for high-frequency electronic ballasts, these lamps offer flicker-free starts and long-term lumen maintenance across a service life of up to 20,000 hours.

• High-Intensity Warm Light: Produces 3,200 lumens of soft 2700K light, perfect for high-ceiling recessed cans where high output is required without a cold "industrial" feel.
• ALTO® Low-Mercury Design: Environmentally responsible construction reduces the mercury footprint of your facility and simplifies disposal protocols.
• Triple Tube Efficiency: The 3U triple-tube design maximizes light distribution while maintaining a compact overall length (MOL 6-3/8") for versatile fixture integration.
• Dimmable Functionality: Compatible with electronic dimming ballasts for precise light level control and additional energy savings.

Technical Specifications

• Brand: Philips PL-T ALTO
• Order Code: 149021 (Also referenced as 14900-5)
• Model: PL-T 42W/827/4P/ALTO
• Wattage: 42W
• Base Type: GX24q-4 (4-Pin Plug-in)
• Color Temperature: 2700K (Warm White)
• Color Rendering Index (CRI): 82
• Initial Lumens: 3,200 lm
• Rated Average Life: 12,000 – 20,000 Hours
• Maximum Overall Length (MOL): 6.375 inches (161 mm)
• Technology: Triple Tube Cluster (PL-T)

Compatibility & Installation Notes

• Electronic Ballast Required: This 4-pin lamp is designed exclusively for use with electronic ballasts. It is not compatible with magnetic starter systems.
• Base Keying: Features a GX24q-4 base. Please confirm your socket type; this base is specifically keyed for 42W fixtures and will not fit sockets designed for 26W (GX24q-3) or 32W lamps.
• Installation: Ensure the power is off before replacing. The 4-pin base should click firmly into place within the ballast socket.
• Ideal Applications: High-ceiling recessed downlights, commercial wall sconces, large-format pendant fixtures, and hospitality area lighting.

Additional Information

The Philips 149021 is a reliable choice for maintenance professionals seeking consistent color and long lamp life. By delivering the same warm glow as incandescent lighting with a fraction of the energy cost, it remains a vital component for facility management. While many systems are migrating toward LED, this high-output PL-T lamp provides an easy, direct-replacement path for maintaining existing high-performance fluorescent infrastructure. Please dispose of this lamp responsibly at end-of-life through your facility's mercury recycling program.