Product Overview
Sylvania 21726 FBO16/865/XP – 16W T8 OCTRON CURVALUME U-Shaped (5000K/6500K display and signage line) Fluorescent Lamp | 6500K | 1,125 Lumens | G13 Medium Bi-Pin
1,125 lumens at 6500K with CRI 85 – a 16W T8 OCTRON CURVALUME U-Shaped (5000K/6500K display and signage line) fluorescent lamp with 1-5/8 in leg spacing.
| Wattage / Type 16W / T8 T8 U-Shaped | Color Temp 6500K 85 CRI | Initial Lumens 1,125 lm | Rated Life 18,000 hr Instant Start, 3 hr/start | Base Type G13 Medium Bi-Pin Confirm Socket |
Quick Specs
- Brand: Sylvania
- Product Code / Model: 21726 / FBO16/865/XP
- Lamp Type: Fluorescent – OCTRON CURVALUME U-Shaped (5000K/6500K display and signage line)
- Starting Method: Instant Start or Programmed Rapid Start (T8 ballast)
- Wattage: 16W
- Base Type: G13 Medium Bi-Pin
- Color Temperature: 6500K
- CRI: 85
- Initial Lumens: 1,125 lm (approx., after 100 hours of operation)
- Mean Lumens: 1,060 lm (measured at 40% of rated life)
- Rated Average Life – Instant Start (IS), 3 hr/start: 18,000 hr
- Rated Average Life – Programmed Rapid Start (PRS), 3 hr/start: 24,000 hr
- Leg Spacing: 1-5/8 in
- Nominal Length: 10.5 in (base face to outside of glass bend)
- Maximum Overall Length (MOL): 10.6 in
- Bulb Diameter: 1 in (T8)
Product Overview
The Sylvania 21726 FBO16/865/XP is a 16W OCTRON CURVALUME U-Shaped (5000K/6500K display and signage line) fluorescent lamp delivering 1,125 initial lumens at 6500K with a CRI of 85. It is built for U-shaped fixtures with 1-5/8-inch leg spacing where lamp length, base type, leg spacing, ballast type, wattage, and color temperature must match the existing system.
This lamp is best suited for maintenance replacement in commercial, industrial, and institutional spaces. Before ordering, confirm the G13 Medium Bi-Pin base, 1-5/8-inch leg spacing, 16W wattage, and 6500K color temperature against your existing lamp or fixture label.
Why Choose This Product
- 1,125 initial lumens: Catalog rating after 100 hours of operation, with 1,060 mean lumens at 40% of rated life.
- 6500K, CRI 85: Helps match the existing light color across a facility.
- 1-5/8-inch leg spacing, G13 Medium Bi-Pin base: U-shaped lamp for the correct fixture socket spacing; confirm before replacement.
- Up to 24,000 hr rated average life: Rated lives are listed for instant start and programmed rapid start operation at 3 and 12 hours per start.
- Sylvania OCTRON quality: Suitable for professional lighting applications and facility maintenance.
Technical Specifications
| Brand | Sylvania |
| Product Code / Model | 21726 / FBO16/865/XP |
| Lamp Type | Fluorescent – OCTRON CURVALUME U-Shaped (5000K/6500K display and signage line) |
| Starting Method | Instant Start or Programmed Rapid Start (T8 ballast) |
| Wattage | 16W |
| Base | G13 Medium Bi-Pin |
| Color Temperature | 6500K |
| CRI | 85 |
| Initial Lumens | 1,125 lm |
| Mean Lumens | 1,060 lm |
| Rated Average Life – Instant Start (IS), 3 hr/start | 18,000 hr |
| Rated Average Life – Programmed Rapid Start (PRS), 3 hr/start | 24,000 hr |
Dimensions
| Nominal Length | 10.5 in (base face to outside of glass bend) |
| Maximum Overall Length (MOL) | 10.6 in |
| Leg Spacing | 1-5/8 in (center of one leg to center of the other) |
| Bulb Diameter | 1 in (T8) |
Applications
- Maintenance and retrofit replacement in compatible U-shaped T8 fixtures with 1-5/8-inch leg spacing
- Commercial, industrial, and institutional facilities and utility spaces
- Replacement for existing FBO16/865/XP lamps – confirm the lamp code on your current lamp
Compatibility & Replacement
Fixture type: Designed for U-shaped T8 fixtures with 1-5/8-inch leg spacing using a G13 Medium Bi-Pin base.
Ballast: Use a ballast designed to operate T8 lamps (instant start, rapid start, or programmed rapid start electronic, or 265 mA magnetic rapid start). Always confirm the existing ballast label before ordering.
Starting temperature: Minimum starting temperature is a function of the ballast; consult the ballast manufacturer.
Sylvania catalog notes for this lamp:
- OCTRON lamps should be operated only with magnetic rapid start ballasts designed to operate 265 mA T8 lamps, or with high frequency (electronic) ballasts that are instant start, rapid start, or programmed rapid start and specifically designed to operate T8 lamps. They may be operated on instant start ballasts with ballast factors from 0.71 to 1.20 at the nominal ballast input voltage. In instant start mode, the two wires or contacts of each socket should be connected to each other and then to the ballast lead wire using National Electric Code techniques.
- Approximate length of OCTRON CURVALUME lamps is measured from the base face to the outside of the glass bend.
Before ordering, confirm:
- Existing lamp model matches FBO16/865/XP or an approved equivalent.
- Fixture socket matches G13 Medium Bi-Pin and the leg spacing is 1-5/8 inches.
- Wattage is 16W and the ballast is compatible.
- Color temperature is 6500K.
- Physical size is 10.5 in nominal length (10.6 in MOL) x 1 in diameter.
Ordering Information
- Brand: Sylvania
- Product Code / Model: 21726 / FBO16/865/XP
- Description: 16W T8 U-shaped fluorescent lamp, 6500K, 1,125 lumens, 1-5/8-inch leg spacing, G13 Medium Bi-Pin base
- Specifications: Taken from the Sylvania linear fluorescent lamp catalog; specifications are subject to change without notice.
Safety & Handling Notes
- Disconnect power before installing or servicing.
- Use only in approved fixtures designed for compatible FBO16/865/XP lamps.
- Fluorescent lamps contain mercury and should be recycled or disposed of according to local regulations.
- Follow the fixture manufacturer's instructions and local electrical codes for installation.
For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.
