SYLVANIA FB31/830 | Octron® Curvalume® 31W T8 U-Bend Fluorescent Lamp

The Sylvania Octron® Curvalume® FB31/830 is a high-performance **31W T8 U-Bend fluorescent lamp** custom-engineered for space-saving commercial, retail, and institutional modular layouts. Measuring **22.6 inches** in maximum overall length with a 1-inch tube diameter, this premium lamp provides a powerful **2725 initial lumens** of smooth, inviting **3000K Warm White** light. Featuring an excellent color rendering index (**82 CRI**) for accurate interior color presentation, this energy-efficient lamp is equipped with a standard **G13 Medium Bi-Pin base** and delivers an extended service life of up to **28,000 hours** when combined with compatible commercial T8 ballast configurations.

Exceptional Color Integrity and High-Efficiency Output

Sylvania Octron® Curvalume® lamps are designed to maximize lumen retention and light delivery inside compact 2x2 ceiling troffers. Boasting an 82 CRI value, this tube ensures that interior finishes, products, and fabrics remain vibrant and true to color. Engineered for long-term consistency, it maintains an impressive **2560 mean lumens** across its operation, providing stable lighting levels that prevent standard system degradation from dimming your space over time.

• Flexible System Compatibility: Formulated for use alongside standard rapid-start ballasts rated at 265 mA or instant-start ballasts featuring a ballast factor spectrum of 0.71 to 1.20.
• Optimized Lifespan: Delivers an operational service range from 15,000 up to 28,000 hours based on 3-hour ignition start cycles; implementing extended operational cycles further expands real-world bulb life.
• Even Ambient Spreading: The curved U-Bend profile fills recessed squares smoothly, eliminating the sharp, uneven shadows common to smaller point-source alternatives.
• Thermal Stabilization: Designed for indoor environments; exposure to continuous heavy drafts or cold pockets below 60°F may result in mild structural striation or temporary brightness dips that clear up once regular temperatures settle.

Technical Specifications

• Brand: Sylvania
• Series / Line Name: Octron® Curvalume®
• Generic Lamp Description: FB31/830 (or FBO31/830)
• Lamp Type: U-Bend Linear Fluorescent
• Bulb Shape: T8 (1-inch Tube Diameter)
• Wattage: 31W
• Base Type: G13 Medium Bi-Pin
• Initial Lumens (at 25°C): 2,725 lm
• Mean Lumens (at 25°C): 2,560 lm
• Color Temperature: 3000K (Warm White)
• Color Rendering Index (CRI): 82
• Maximum Overall Length (MOL): 22.6 Inches
• Average Rated Life: 15,000 – 28,000 Hours

Common Commercial Applications

• Corporate Offices: Populates modular 2x2 office troffers to establish comfortable, warm, glare-reduced general task lighting environments.
• Retail Showrooms & Hospitality: Accents high-traffic architectural spaces with a relaxing 3000K spectrum that highlights welcoming interior designs.
• Educational & Medical Facilities: Provides reliable, long-life overhead ambient lighting in waiting rooms, lobbies, and corridors.