Replacement Light Bulb for HR100DX38-4 - 100W 4100 Lumens E39 Base

Replacement for HR100DX38-4 Mercury HID light bulb 100 watts BT23.5 shape. This part matches the original 4100 lumens output at 4000 color temperature with white finish and CRI of 45. Mercury vapor technology delivers reliable high-intensity discharge lighting that has been trusted in commercial and industrial settings for decades. The consistent performance ensures steady illumination without the need for frequent changes, making it an economical choice for facilities that require dependable light sources around the clock. Users appreciate the broad light distribution that covers large areas effectively while maintaining good color rendering for the given CRI rating. Long service intervals reduce maintenance demands in high-ceiling environments where access can be difficult. The robust construction withstands vibration and temperature variations common in warehouses and production floors.

Key Features & Benefits

• Operates at 100 watts with 4100 lumens output
• Provides 24000 hours rated life
• Delivers 4000 color temperature light
• Features E39 mogul screw base
• BT23.5 shape with white bulb finish

Product Specifications

• Watts: 100
• Base: E39 MOGUL SCREW BASE 39MM DIAMETER (E40)
• Color Temp: 4000
• Lumens: 4100
• Shape: BT23.5
• Life: 24000
• CRI: 45
• Bulb Finish: WHITE
• Replaces OEM: HR100DX38-4

Replacement Compatibility

This part replaces HR100DX38-4 in multi-application fixtures requiring 100W Mercury HID light bulbs with E39 base. Proper installation involves turning off power to the fixture, allowing the old bulb to cool completely, and screwing in the new bulb until secure. Once powered on, the bulb will reach full brightness after a short warm-up period typical of mercury vapor lamps. Always verify compatibility with your ballast and fixture rating before use to ensure safe and optimal operation over the full rated lifespan. Facilities often keep spares on hand to minimize downtime when lamps reach end of life. The stable arc tube design supports consistent output across varying voltage conditions within ballast tolerances.

Discover the Perfect Replacement

Browse our selection of exact replacement parts to find the match for your current lighting setup and restore proper function without delay. This bulb offers a straightforward path for existing mercury HID systems that continue to meet operational requirements in warehouses, factories, and outdoor lighting arrays where high output and long service intervals remain priorities. Regular inspection of sockets and ballasts helps maximize performance and prevents premature failures in demanding applications.

During the checkout process, you can choose from expedited services such as overnight delivery to standard ground shipping. We aim to ensure your order is delivered promptly and reliably, wherever you are.

All returns must be made within 30 days of purchase with the invoice. (After 30 days, Interlight credit only, Minimum 25% restocking fee, no returns after 60 days, special items order just for you are not returnable.)

At Interlight, your satisfaction is our priority. We offer a 30-day money-back guarantee on eligible products, provided they are returned in resalable condition with the original invoice.