PHILIPS 42W PL-T 3500K | Triple Tube Compact Fluorescent | GX24q-4 4-Pin Base | ALTO

Philips PL-T 42W/835/4P/ALTO (Order Code: 149021 / 433474) is a high-output triple-tube compact fluorescent lamp designed for commercial downlights and high-ceiling applications. Featuring a 3500K natural white color temperature and ALTO® low-mercury technology, this lamp provides a balanced, crisp light output of 3200 lumens. Its compact triple-tube design offers a shorter overall length than standard tubes, allowing for high-intensity illumination in low-profile fixtures.

Product Overview

The Philips PL-T 42W series is engineered for high-performance architectural and commercial lighting. The 3500K "Natural White" spectrum is ideal for offices and retail spaces where a neutral, professional atmosphere is desired. With ALTO® technology, these lamps contain less mercury than standard CFLs, making them an environmentally responsible choice that meets TCLP standards. This lamp is specifically designed for use with electronic ballasts, supporting dimming capabilities in compatible systems and ensuring a long service life of up to 20,000 hours.

• Natural White Spectrum: The 3500K color temperature provides a clean, neutral light that is warmer than daylight but cooler than traditional warm white.
• Sustainable ALTO® Technology: Manufactured with significantly less mercury, facilitating easier disposal and compliance with environmental regulations.
• High Lumen Output: Delivers 3200 lumens, providing the brightness necessary for retail aisles, lobbies, and large commercial spaces.
• Triple Tube Compactness: The specialized geometry provides a compact physical footprint with an MOL of 6-3/8", fitting into a wide variety of fixture types.

Technical Specifications

• Brand: Philips PL-T ALTO
• Order Code: 14902-1 (New Code: 43347-4 / 26873-0)
• Model: CFTR42W/GX24q/835
• Wattage: 42W
• Base Type: GX24q-4 (4-Pin Plug-in)
• Color Temperature: 3500K (Natural White)
• CRI: 82
• Initial Lumens: 3,200 lm
• Rated Average Life: 12,000 – 20,000 Hours
• Max Overall Length (MOL): 6.375 inches

Compatibility & Application

• Electronic Ballast Only: This 4-pin lamp requires an electronic ballast for operation. It is not compatible with 2-pin magnetic ballasts.
• Base Keying: The GX24q-4 base is specifically keyed for 42W fixtures. To avoid electrical issues, ensure your socket matches this keying; it will not fit into 26W (GX24q-3) or 32W (GX24q-3) housings.
• Cross-Reference: Replaces discontinued Philips code 26875-5 and is a direct equivalent to Sylvania CF42DT/E/835 and GE F42TBX/835/A/ECO.
• Ideal Applications: Recessed ceiling downlights, wall sconces, retail floor lighting, and hospitality corridors.

Additional Information

When selecting a replacement PL-T lamp, matching the wattage and base type is essential. This 42W lamp is the highest wattage in the standard PL-T family and offers an excellent maintenance-free solution for large facilities. The 3500K color temperature is widely favored by architects and designers for its ability to look professional without appearing clinical or "blue," ensuring a comfortable environment for both employees and customers.