SYLVANIA 66444 Opti-Select Linear High Bay — 255/275/300W Selectable, 277–480V

One fixture. Three wattages. Three color temperatures. Three beam patterns. The SYLVANIA 66444 Opti-Select delivers up to 45,000 lumens with field-selectable 255W / 275W / 300W output, 3500K / 4000K / 5000K CCT, and switchable distribution optics — all adjustable on the job site without rewiring. Built for 277–480V commercial systems, IK09-rated for tough environments, and DLC 5.1 Premium listed for utility rebate eligibility.

Key Features

• Selectable Wattage: 255W / 275W / 300W — scale output to your ceiling height and footcandle targets
• Selectable CCT: 3500K / 4000K / 5000K — field-adjustable, no special order required
• Delivered Lumens: 38,250 / 41,250 / 45,000 lm (up to 150 LPW efficacy)
• Selectable Optics: Adjustable distribution — 90x90° / 45x100° / 65x95° switchable at the fixture
• Voltage: 277–480V high-voltage input
• Dimming: 0–10V dimmable
• CRI: >80
• Environmental Rating: cULus Damp Location listed, –40°C to 50°C operating range
• Impact Rating: IK09
• Certifications: DLC 5.1 Premium, FCC, RoHS compliant
• Rated Life: 100,000 hours (L70)
• Warranty: 5 Years

?? Rebate Eligible: DLC 5.1 Premium listing qualifies this fixture for utility rebate programs in most U.S. states. Check your local utility's rebate database before purchasing.

Typical Applications

• Large warehouses and distribution centers with 30–50 ft ceilings
• School gymnasiums and recreational facilities
• Municipal buildings and corridors
• Manufacturing and industrial facilities
• Cold storage and loading docks
• Big box retail and large open-plan spaces

Performance & Light Output

The SYLVANIA 66444 delivers scalable illumination from 38,250 to 45,000 lumens, achieving up to 150 lumens per watt — providing significant energy savings over traditional 400W–750W HID sources. The Opti-Select design lets installers toggle between three distinct light distribution patterns (90x90°, 45x100°, or 65x95°), making it easy to switch between wide open-area lighting and narrow aisle lighting directly on the job site. LEDs deliver a CRI greater than 80 and an L70 rated life of 100,000 hours.

Electrical & Controls

This fixture operates on a dedicated 277–480V AC driver with standard 0–10V dimming. Power factor exceeds 0.9 and total harmonic distortion (THD) is below 20%. All fixtures ship with a pre-wired sensor base ready to accept an optional screw-in motion/daylight sensor (sold separately) or field-installable LEDVANCE LINK Bluetooth Mesh network components for advanced lighting controls.

Construction & Durability

Engineered for demanding commercial environments, the luminaire features a durable white steel housing with an IK09 impact rating. The cULus Damp Location listing ensures reliable operation in ambient temperatures from –40°C to 50°C (–40°F to 122°F) — suitable for cold storage, loading docks, and outdoor-adjacent spaces.

Installation & Mounting

Designed for straightforward suspended mounting right out of the box. V-hooks and 3-foot mounting chains are included. Optional surface mounting brackets, pendant mounting brackets, and aircraft cable mounts are available separately for custom site applications. Recommended mounting height: 30–50 feet.

What's Included

• LED Opti-Select Linear High Bay (White)
• V-Hooks
• 3-Foot Mounting Chains