SYLVANIA OCTRON® CURVALUME® 16W 3500K U-Shaped T8 Fluorescent Lamp

The Sylvania OCTRON® CURVALUME® 16-Watt U-Shaped T8 is a commercial-grade, high-efficiency **U-bend linear fluorescent lamp** engineered for low-profile modular architectural troffers, shallow geometric office surface luminaires, and institutional grid ceiling downlights. Outfitted with standard **G13 Medium Bi-Pin bases** on a compact **1-inch leg spacing profile**, this specialized T8 rapid-start module delivers a balanced, glare-managed **3500K Clean White** color temperature. Producing **1,125 initial lumens** with an uncompromised **82 CRI** color fidelity metric, it features an extended industrial service lifecycle ranging from **15,000 to 28,000+ hours** depending on system configuration. Developed by OSRAM Sylvania to satisfy strict structural footprints where straight linear tubes cannot fit, this energy-conscious fluorescent element optimizes volumetric lighting distribution inside professional environments.

OCTRON® Curvalume® High-Density Spatial Volumetric Illumination

Sylvania OCTRON® CURVALUME® lamps combine the robust color rendering and long operational life of standard linear T8 tubes with an advanced U-bend glass geometry. By curving a full-length fluorescent envelope into a tight, space-saving layout, this **16W U-shape lamp** concentrates balanced multi-directional light into square $2 \times 2$ recessed ceiling troffers. Built with high-purity internal rare-earth phosphors, it keeps lumen depreciation remarkably low, retaining an impressive **1,060 mean lumens** at mid-life. This ensures crisp, uniform workspace lighting with no asymmetric dark zones or immediate brightness loss. Perfect for commercial offices, clinics, and educational buildings, its compact layout fits easily inside modular architectural setups.

• Flexible Ballast Integration: Optimized for high-frequency electronic ballasts (Instant Start, Rapid Start, or Programmed Rapid Start) or classic 265mA magnetic rapid-start hardware.
• Superior Lifespan Scaling: Rated for an impressive **15,000 to 28,000+ hours** of service; extending operating cycles past the baseline 3-hour mark yields substantial lifetime increases.
• High Lumen Maintenance Profile: Retains **94% of its initial luminous power** throughout mid-life operations, ensuring consistent light distribution and preventing early system dimming.
• Clean Architectural Profile: The slim, 1-inch T8 tube diameter combined with an overall length of 10.6 inches allows quick replacement inside shallow commercial fixtures.

Comprehensive Technical Specifications

• Brand Name: Sylvania
• Product Family / Series: OCTRON® CURVALUME® U-Shaped Series
• Technology Type: Linear Volumetric Fluorescent
• Nominal Wattage: 16W
• Bulb Shape Configuration: T8 U-Bend Glass Tube (1-Inch / 25.4mm Diameter)
• Base Type: G13 (Medium Bi-Pin Interface on both legs)
• Initial Luminous Flux (at 25°C): 1,125 Lumens (Measured after 100 hours of burn-in operation)
• Mean Luminous Flux (at 25°C): 1,060 Lumens (Measured at 40% of rated service lifespan)
• Color Temperature: 3500K (Clean White Workspace Spectrum)
• Color Rendering Index (CRI): 82
• Rated Average Service Life: 15,000 to 28,000 Hours (Dependent on ballast pairing and cycling mode)
• Maximum Overall Length (MOL): 10.6 Inches (269.2 mm)
• Bulb envelope Diameter (DIA): 1.00 Inch (25.4 mm)
• Testing Cycle Baseline: Standardized 3-Hour operational intervals per ANSI specifications

System Integration, Ballast Wiring & Environmental Dynamics

• Instant Start Circuit Shunting Requirements: When integrating OCTRON® lamps into electronic **Instant Start ballasts** (utilizing ballast factors from 0.71 to 1.20), the two wire leads or dual socket contacts on each side of the G13 lampholder **must be electrically shunted (connected to each other)** before tying into the primary ballast output lead wire in accordance with the National Electrical Code (NEC).
• Thermal Limits and Striation Management: If this operating lamp is exposed to cold cross-drafts or ambient building temperatures fall below **60°F (15.5°C)**, temporary *striation* (a rhythmic, swirling pulse pattern of light traveling down the glass envelope) or reduced brightness may occur. This is a normal physical property of fluorescent mercury vapor thermodynamics; it does not damage the bulb, and restoring room temperature above 60°F will instantly return the lamp to normal operation.
• Supersaver® and System Incompatibility Safety: This module is not recommended for use in: (1) remotely ballasted configurations where open-circuit voltage falls below 550V RMS, (2) Rapid Start setups unless the open-circuit line exceeds 570V, (3) specialized air-handling troffers, (4) low power factor ballasts, or (5) inverter-driven emergency battery backups unless explicitly listed. Non-compliant matching can trigger starting failures, flashing, or rapid cathode degradation.

Recommended Professional & Commercial Applications

• Commercial Offices and Troffers: Perfectly optimized for $2 \times 2$ recessed modular troffers, shallow parabolic grid ceilings, and workspace task arrays.
• Healthcare and Institutional Lobbies: Ideal for medical centers, schools, and public corridors requiring reliable, multi-directional light that minimizes shadows.
• Shallow Geometric Luminaires: Well-suited for decorative surface-mount geometric fixtures, hospitality common rooms, and low-clearance storage areas.