The GLT LHB Series is a family of contractor-grade field-adjustable LED linear high bays engineered for commercial and industrial facilities of every size. Four models — LHB-18L, LHB-24L, LHB-40L, and LHB-60L — cover the full range from lower-ceiling light industrial spaces to the largest high-cube distribution and manufacturing facilities. Every model features four selectable wattage steps (40% / 60% / 80% / 100%) and dual selectable CCT (4000K / 5000K), adjustable on-site via built-in switches before installation. Available in 120–277V and 347–480V to match any facility's distribution system. CRI 80+, UL listed for damp locations, DLC Premium listed, and cold-start rated to -40°C across the entire family. Backed by a 5-year manufacturer warranty.

Model Selection Guide

• LHB-18L — 52W / 78W / 104W / 130W: 8,200–18,500 lm | up to 158 lm/W | 14.17" × 9.45" | Ceiling: 10–25 ft | Replaces 175W–320W MH
• LHB-24L — 64W / 96W / 128W / 160W: 10,600–24,100 lm | up to 166 lm/W | 18.11" × 11.02" | Ceiling: 10–30 ft | Replaces 250W–400W MH
• LHB-40L — 120W / 180W / 240W / 300W: 20,000–42,000 lm | up to 167 lm/W | 26.77" × 11.02" | Ceiling: 14–35 ft | Replaces 600W–1000W MH
• LHB-60L — 164W / 246W / 328W / 410W: 28,000–60,600 lm | up to 171 lm/W | 36.22" × 11.02" | Ceiling: 18–40 ft | Replaces 1000W–1500W MH

Key Features — All Models

• Field-Selectable Wattage: Four steps (40% / 60% / 80% / 100%) — right-size output for ceiling height without stocking multiple SKUs
• Field-Selectable CCT: 4000K or 5000K — set color temperature on-site before installation
• CRI: 80+ across all models, wattage, and CCT settings
• Dimming: 0–10V dimmable driver standard on all models
• Voltage Options: 120–277V or 347–480V — select at time of order
• Location Rating: UL listed for damp locations — all models
• Cold-Start Rated: -40°C to +50°C (-40°F to +122°F) — all models
• Rated Life: 50,000 hours (IES LM-80 / TM-21, L70)
• Certifications: DLC Premium, UL Listed, TAA Compliant, RoHS — all models
• Warranty: 5-year manufacturer warranty

Performance & Light Output

Lumen output and efficacy are identical across 4000K and 5000K CCT settings for all models. LHB-18L: 130W/18,500 lm/142 lm/W → 52W/8,200 lm/158 lm/W. LHB-24L: 160W/24,100 lm/151 lm/W → 64W/10,600 lm/166 lm/W. LHB-40L: 300W/42,000 lm/140 lm/W → 120W/20,000 lm/167 lm/W. LHB-60L: 410W/60,600 lm/148 lm/W → 164W/28,000 lm/171 lm/W. All models maintain CRI 80+ and 50,000-hour rated life per IES LM-80 / TM-21 (L70).

Smart & Control Features

All LHB models include a standard 0–10V dimmable driver and support the same plug-and-play sensor accessories:

• Plug-and-Play PIR Sensor (12–24VDC): MSANT12VPH01 (standard) | MSANT12VPHB01 (Bluetooth) — sold separately
• Plug-and-Play Microwave Sensor (12–24VDC): MSANT12VMH01 (standard) | MSANT12VMHB01 (Bluetooth) — sold separately

Main stocking sensor SKU: MSANT12VPH01. Bluetooth variants enable wireless group control without a separate gateway.

Electrical

Available in 120–277V AC or 347–480V AC, 50/60Hz. Standard 0–10V dimming driver on all models. The 347–480V variant eliminates the need for step-down transformers in high-voltage industrial facilities. TAA compliant. Driver integrated within the aluminum housing on all models.

Construction

All models feature die-cast and extruded aluminum housing, white powder-coat finish, and frosted polycarbonate lens for uniform light distribution. UL listed for damp locations. Housing depth is consistent across all models at 1.65" (41.8mm); width and length scale with model size (see Model Selection Guide above).

Installation & Mounting

Steel wire rope suspension mount is included with every model. Surface mount and conduit pendant mount kits are available separately for all models.

• Emergency Battery Options: 8W 900lm (LHB-18L) | 15W 2000lm (LHB-24L) | 25W 3500lm (LHB-40L) | 25W 3500lm or 30W 4000lm for 347–480V (LHB-60L) — all sold separately
• Sensors: MSANT12VPH01 (PIR), MSANT12VMH01 (Microwave), Bluetooth variants — sold separately
• Wire Guards: Available separately for all models

Certifications & Rebates

All models UL listed for damp locations. DLC Premium listed across the full LHB family — eligible for utility rebate programs in most U.S. states and Canadian provinces. Verify eligibility at designlights.org. TAA compliant. RoHS compliant.

Typical Applications

• Warehouses & Distribution Centers: Scale from LHB-18L for low-bay storage to LHB-60L for high-cube facilities; aisle or general distribution to match layout
• Manufacturing & Industrial Facilities: Damp-location rating and -40°C cold-start handle the full range of production floor environments
• Large Retail & Big-Box Spaces: Dual CCT selection matches existing ambient lighting; selectable wattage avoids over-lighting lower-ceiling areas
• Commercial Garages & Auto Service: Uniform high-output illumination improves visibility for inspection and detail work at any ceiling height
• Athletic & Recreation Facilities: Right-size the model to ceiling height — LHB-18L for school gyms, LHB-60L for arenas
• Cold-Storage & Refrigerated Warehouses: -40°C cold-start rating across the full family — reliable from power-on in freezer environments

What's Included

• GLT LHB Series LED Linear High Bay (selected model and voltage) with integrated LED module, driver, and field-selectable wattage/CCT switches
• Steel wire rope suspension mounting kit