Keystone 4FT LED Linear High Bay 63,420 Lumens 420W 5000K 120–277V Frosted

Keystone KT-HBLED420-4F-850-VDIM-P /G2 (SQH-49) 4FT Linear LED High Bay — 420W, 120–277V

The Keystone KT-HBLED420-4F-850-VDIM-P /G2 is a 4FT LED linear high bay delivering approximately 63,420 lumens at 5000K with a frosted diffuser for uniform illumination. Operating on a universal 120–277V platform with 0–10V dimming, this fixture is UL 1598 Listed for dry and damp locations and backed by a 10-year limited warranty.

Key Features:

• Easy Code: SQH-49
• Wattage: 420W
• Delivered Lumens: ~63,420
• CCT: 5000K
• Voltage: 120–277V
• Dimming: 0–10V dimmable
• CRI: >80
• Efficacy: ~151 lm/W
• Power Factor: >0.90
• THD: <20%
• Lifetime: L70 >100,000 hrs
• Lens: Frosted PMMA diffuser
• Certifications: UL 1598, DLC Premium
• Location Rating: Dry / Damp
• Operating Temp: –4 °F to +122 °F (–20 °C to +50 °C)
• Warranty: 10-Year Limited Warranty

Typical Applications:

• Warehouses
• Distribution centers
• Manufacturing facilities
• Gymnasiums
• Indoor commercial spaces

Performance & Light Output:
Delivers ~63,420 lumens at 5000K with ~151 lm/W efficacy.

Electrical & Controls:
Operates on 120–277V with 0–10V dimming. Power factor >0.90 and THD <20%. Sensor receptacle supports optional controls.

Construction & Durability:
Steel housing with frosted diffuser, UL 1598 Listed for dry and damp locations. LED lifetime L70 >100,000 hrs and 10-year limited warranty.

Installation & Mounting:
Includes V-hook and chain hardware. Optional mounts available (sold separately).

Included:
LED high bay with frosted lens, V-hook, chain mounting hardware.

Accessories
Optional accessories include aircraft cable kits, pendant mount kits, surface mount kits, wire guard kits, PIR occupancy sensors, Smart Port sensor options, and emergency battery backup kits (model dependent).