PHILIPS 18W PL-T 4100K | Triple Tube Compact Fluorescent | GX24q-2 4-Pin Base | ALTO

Philips PL-T 18W/841/4P/ALTO (Order Code: 26822-7) is a high-efficiency triple-tube compact fluorescent lamp designed for modern electronic ballast systems. Delivering 1,200 lumens of crisp 4100K cool white light, this lamp utilizes ALTO® low-mercury technology to provide a sustainable, high-performance lighting solution. Its triple-tube "3U" design allows for high light output in space-constrained fixtures, making it a preferred choice for commercial recessed downlights, track lighting, and professional task areas.

Product Overview

The Philips PL-T 18W series is engineered to provide superior light distribution in compact luminaires. The 4100K "Cool White" spectrum offers a clean, energizing atmosphere that is ideal for offices, retail aisles, and healthcare facilities. Featuring ALTO® technology, these lamps contain less mercury than standard CFLs, ensuring they meet EPA TCLP guidelines for non-hazardous disposal. Optimized for use with high-frequency electronic ballasts, they deliver flicker-free starting and a reliable service life of up to 16,000 hours in optimal conditions.

• Energizing Cool White Spectrum: The 4100K color temperature provides a bright, professional light that enhances focus and visibility in workspaces.
• Sustainable ALTO® Technology: Industry-leading low mercury content reduces environmental impact and facilitates easier facility waste management.
• Triple Tube Geometry: Specialized 3U design delivers high-intensity light output (MOL 4-5/8") for low-profile architectural fixtures.
• Dimmable Performance: Fully compatible with electronic dimming ballasts, allowing for adjustable light levels and increased energy savings.

Technical Specifications

• Brand: Philips PL-T ALTO
• Order Code: 26822-7 (268227)
• Model: CFTR18W/GX24q/841
• Wattage: 18W
• Base Type: GX24q-2 (4-Pin Plug-in)
• Color Temperature: 4100K (Cool White)
• Color Rendering Index (CRI): 82
• Initial Lumens: 1,200 lm
• Rated Average Life: 12,000 – 16,000+ Hours
• Maximum Overall Length (MOL): 4.625 inches (117-120 mm)
• Technology: Triple Tube (PL-T / 3U)

Compatibility & Application Notes

• Electronic Ballast Required: This 4-pin lamp is designed strictly for use with electronic ballasts. It is not compatible with older magnetic starter systems.
• Base Keying: Features a GX24q-2 base. This is specifically keyed for 18W fixtures; please verify your socket, as it will not fit 26W (GX24q-3) or 42W (GX24q-4) housings.
• Dimming: Compatible with most architectural dimming systems when paired with the appropriate electronic dimming gear.
• Primary Applications: Professional office suites, retail general lighting, recessed corridor downlights, and high-visibility task lighting.

Additional Information

The Philips 26822-7 is a mainstay for facility managers seeking reliable performance and color consistency. By maintaining high lumen maintenance throughout its life, it ensures that commercial spaces remain uniformly bright and professional. While many facilities are transitioning to LED, this 18W PL-T remains an essential replacement part for maintaining existing high-performance CFL infrastructure without the need for immediate fixture replacement.