Philips 423889 F40T12/CW/SUPREME/ALTO 40W 4ft T12 Fluorescent Tube Cool White [30-Pack]

Identification & Use

This linear fluorescent lamp carton is intended for commercial luminaires using G13 medium bi-pin lampholders configured for 4-foot T12 lamps. Supplied as a maintenance quantity pack, the lamps are installed in strip fixtures, wraparound fixtures, and industrial shop lights in warehouses, maintenance areas, utility rooms, and general commercial interiors requiring cool white ambient illumination.

Fit & Electrical Compatibility

• Lamp Shape: 4-foot straight T12 linear tube
• Base Type: G13 medium bi-pin lampholder required
• Operating Ballast: Requires compatible T12 magnetic ballast
• Voltage Source: Ballast operated; not direct line voltage
• Incompatible Systems: Not compatible with electronic T8 ballasts or LED drivers
• Fixture Type: For T12 fixtures only; not compatible with T8 lampholders in ballast-matched systems
• Starting Method: Designed for rapid start or preheat circuits depending on ballast

Technical Performance Specifications

• Lamp Type: Linear fluorescent
• Wattage: 40 watts per lamp
• Lamp Length: Nominal 48 inches
• Lamp Diameter: T12
• Color Temperature: Cool White
• Base Configuration: G13 bi-pin
• Operation: Magnetic ballast operated
• Phosphor Type: ALTO low mercury coating
• Application Category: General area illumination
• Package Quantity: 30 lamps per carton

Fixture / Application Type

Designed for industrial and commercial strip fixtures, wrap lights, and utility luminaires originally engineered for 4-foot T12 fluorescent lamps. Common installations include warehouses, maintenance facilities, workshops, and service areas where broad distribution lighting is required.

System Matching / Replacement Reference

Direct replacement for F40T12 fluorescent lamps operating on compatible magnetic ballasts. Intended for maintenance replacement without modifying fixture wiring or ballast configuration.

Installation Requirements

Requires compatible T12 magnetic ballast and functional G13 lampholders. Verify ballast rating, starting method, and fixture condition before installation. Follow standard fluorescent handling and electrical safety procedures.

Final Application Guidance

Use only in fixtures designed for 4-foot T12 fluorescent lamps operating on a magnetic ballast system. Confirm lampholder type, ballast compatibility, and circuit condition before installation.