Osram F15T8/CW T8 Preheat Fluorescent Lamp 15W Cool White

Product Description

The OSRAM F15T8/CW is a 15-watt T8 preheat fluorescent lamp designed for use in preheat-ballast fixtures requiring an 18-inch nominal tube. It produces 825 lumens at 77 degrees F with a cool white phosphor that delivers a 4200K color temperature and a Color Rendering Index of 60. The medium bi-pin base provides a secure connection to compatible preheat starters and ballasts. This lamp is a standard replacement for commercial, institutional, and light industrial lighting applications and is typically serviced by electricians or qualified lighting maintenance personnel.

This lamp fits preheat-type fluorescent fixtures commonly found in older commercial and institutional installations, including offices, schools, storage areas, and utility spaces. The T8 tube shape and medium bi-pin base are standard configurations in preheat-ballast systems. With a rated lamp life of 7500 hours at a 3-hour start cycle, it is suited for locations where lights remain on for extended periods per switching event. The cool white color output works well in task and ambient lighting environments where neutral to slightly cool illumination is preferred.

Key Features

• 15-watt T8 preheat fluorescent lamp with 825 initial lumens at 77 degrees F
• 4200K cool white phosphor for neutral, slightly cool color output
• Color Rendering Index of 60, appropriate for general commercial and utility lighting
• Rated 7500 hours lamp life based on 3-hour start cycles
• Medium bi-pin base for compatibility with standard preheat lamp holders
• 18-inch nominal length; tube diameter 1.093 inches

Compatibility

Designed as an OEM-style replacement for preheat fluorescent fixtures using T8 medium bi-pin lamps at 18-inch nominal length. An alternate catalog number for this lamp is F15T8CW.

Installation Notes

Installation should be performed by a licensed electrician or qualified lighting maintenance technician in accordance with applicable NEC requirements. De-energize the fixture and allow the lamp and any associated components to cool before handling. Preheat fixtures require a compatible starter; inspect and replace the starter if the lamp flickers or fails to strike reliably. Do not force the bi-pin base into the lamp holder; align pins carefully before seating to avoid damaging the base or socket.

Technical Specifications

• Wattage: 15 W
• Lamp Type: Preheat Fluorescent
• Shape: T8
• Base Type: Medium Bi-Pin
• Initial Lumens: 825 lm at 77 degrees F
• Color Temperature: 4200 K
• Color Rendering Index: 60
• Rated Lamp Life: 7500 hours (3-hour start cycle)
• Nominal Length: 18 inches
• Tube Diameter: 1.093 inches
• Overall Length: 17.83 inches
• Phosphor Style: Cool White
• Standard Package: 24 per case
• Package Weight: 4.55 pounds
• Country of Origin: Multiple

Standard Information

• Brand: OSRAM
• Manufacturer Part Number: F15T8/CW