NaturaLED 4633 LED55FHID/ED37/EX39/840 55W LED ED37 Filament HID Replacement Bulb 4000K EX39 Base 120-277V

Identification & Application NaturaLED 4633 LED55FHID/ED37/EX39/840 55W LED ED37 Filament HID Replacement Bulb 4000K EX39 Base 120-277V. The NaturaLED 4633 is a 55W LED ED37 filament HID replacement bulb designed to retrofit existing HID luminaires with EX39 mogul base sockets. This lamp delivers a fixed 4000K color temperature and operates on 120-277V line voltage. It is intended for direct wire installation following ballast removal in compatible fixtures. The ED37 form factor supports use in high bay, low bay, and area lighting applications where physical clearance and ventilation are verified. Confirm socket type, enclosure rating, and wiring configuration prior to energizing. The NaturaLED 4633 LED55FHID/ED37/EX39/840 55W LED ED37 Filament HID Replacement Bulb 4000K EX39 Base 120-277V is designed for commercial, industrial, residential, maintenance, and specification-grade lighting applications requiring compatible installation conditions and documented manufacturer reference information. The product configuration supports use where the listed electrical, optical, mechanical, mounting, and control characteristics match fixture, replacement, and project requirements. Technical Performance Specifications Brand: NaturaLED SKU/MPN: 4633 Product Type: LED HID Replacement Bulb Installation Type: Ballast bypass, direct wire Electrical: 55W, 120-277V Optical: 4000K, CRI >80, filament style distribution Mechanical: ED37 shape, EX39 mogul base Lifecycle: 50,000 hr Documentation: See manufacturer spec sheet for additional details