Osram FBO31/841 31W T8 U-bent Fluorescent Lamp 4100K

Product Description

The OSRAM FBO31/841 is a 31-watt T8 U-bent fluorescent lamp designed for commercial and industrial lighting applications. Built on the Octron 800 platform with rare earth phosphor technology, it delivers an initial output of 2,725 lumens and a mean output of 2,560 lumens at 25 degrees C. The lamp operates on both instant-start and programmed rapid-start ballasts, offering flexibility across a range of compatible fixtures. With a color temperature of 4100K and a color rendering index of 82, it produces a neutral cool-white light well suited to offices, retail spaces, and light industrial environments. Licensed electricians and lighting contractors handle routine installation and replacement.

This lamp is intended for use in U-bent fluorescent fixtures found in recessed troffers and other commercial overhead lighting systems. The 1-5/8-inch leg spacing is the standard dimension for this lamp family. It is packaged individually and available in cases of 15. The lamp is TCLP compliant and lead-free, meeting environmental disposal requirements that are increasingly mandated in commercial renovation and new-construction projects. Rated lamp life ranges from 15,000 hours at 3-hour instant-start cycling up to 28,000 hours at 12-hour programmed rapid-start cycling, making operating cycle a meaningful factor in fixture selection.

Key Features

• 31-watt T8 U-bent form factor with 1-5/8-inch leg spacing
• 2,725 initial lumens and 2,560 mean lumens at 25 degrees C
• 4100K color temperature with CRI of 82 for neutral cool-white output
• Compatible with instant-start and programmed rapid-start ballasts
• Rated life up to 28,000 hours under 12-hour programmed rapid-start cycling
• TCLP compliant and lead-free construction

Compatibility

Designed as an OEM-style replacement for T8 U-bent fluorescent fixtures using medium bi-pin lamps with 1-5/8-inch leg spacing and compatible with both instant-start and programmed rapid-start ballast systems.

Installation Notes

Installation and lamp replacement should be performed by a qualified electrician or lighting maintenance technician. De-energize the fixture at the breaker before handling any lamp or ballast components. Confirm ballast type and compatibility with instant-start or programmed rapid-start operation before installation. Dispose of spent fluorescent lamps in accordance with local regulations governing mercury-containing waste.

Technical Specifications

• Wattage: 31 watts
• Initial Lumens: 2,725 lumens at 25 degrees C
• Mean Lumens: 2,560 lumens at 25 degrees C
• Color Temperature: 4100K
• Color Rendering Index: 82
• Lamp Type: Instant/Programmed Rapid Start
• Shape: T8 U-Bent
• Style: Octron 800, Rare Earth Phosphor
• Base Type: Medium Bi-Pin
• Leg Spacing: 1.625 inches
• Nominal Length: 22.5 inches
• Maximum Overall Length: 22.6 inches
• Rated Life: 15,000 hours at 3-hour instant start; 24,000 hours at 12-hour instant start; 20,000 hours at 3-hour programmed rapid start; 28,000 hours at 12-hour programmed rapid start
• Material: Glass
• Compliance: TCLP compliant, lead-free
• Package Dimensions: 24.0 inches L x 2.812 inches W x 1.06 inches H
• Package Weight: 10.439 pounds (case of 15)
• Standard Package: 1 per pack, 15 per case

Standard Information

• Brand: OSRAM
• Manufacturer Part Number: FBO31/841