Linear High Bay LED Light – ST59 Series | 320w | 140 LM/W | DLC Premium | 1-10V Dimmable [ST36-LHB-14-7320-8XX-B]

The ST59 Series Linear High Bay is a high-output LED fixture engineered for large indoor spaces that demand bright, even, energy-efficient lighting. With a luminous efficacy of 140 lm/W and output up to 44,800 lumens, it’s an easy upgrade from legacy fluorescent or metal halide high bays — cutting energy use while improving light quality. Available in 1×2′ and 1×4′ housings across four wattages (110W, 165W, 225W, 320W), it installs quickly via two gripper cables with a junction box built right into the back, and mounts as either a pendant or surface fixture.

Key Features

• High efficacy: 140 lm/W, up to 44,800 lumens (320W model)
• Flicker-free performance: ≥120Hz current frequency, ripple current ≤5%
• Smooth dimming: 1-10V dimming compatible
• High power quality: PF ≥0.90, driver efficiency >87%, THD <20%
• Consistent color rendering: CRI ≥80, SDCM ≤4, Duv ≤0.006
• Wide 90° beam angle for broad, even light distribution
• Durable construction: white steel housing with a PC lens, IP20 rated
• Built to last: L70 ≥50,000 hours, L90 ≥36,000 hours, 5-year warranty
• Certified: DLC Premium, UL Listed, CE, RoHS
• Surge & ESD protected: 4KV surge protection, 4KV contact / 8KV air ESD
• Flexible CCT options: 4000K, 4500K, 5000K, or 5700K
• Optional add-ons: PIR/microwave sensors, emergency battery backup, remote controls, wire guards, surface mount kit
• Quick installation: hangs via two gripper cables, wired through an integrated junction box

Common Applications

• Warehouses and distribution centers
• Gymnasiums and athletic facilities
• Manufacturing and industrial plants
• Big-box retail and storage facilities
• High-ceiling commercial spaces