Best 400W Metal Halide High Bay Lighting Options for Industrial Spaces
When illuminating large industrial facilities, warehouses, and parking areas, 400W metal halide high bays deliver strong, reliable brightness with high lumen output. The following selections reflect common ballast configurations, mogul bases (E39), and compatibility with open or enclosed fixtures. LED replacements are noted for comparison, but the focus remains on traditional metal halide performance and its suitability for high-ceiling environments. Each option features solid lumen output, color rendering, and practical installation notes to help facility managers choose efficiently.
| Product | Brand | Base | Lumen Output | Notes |
|---|---|---|---|---|
| Sunlite MH400/U/MOG | Sunlite | E39 Mogul | 36,000 | 400W, 4000K, 12,000 hour life |
| Ark Lighting High Bay Flat Lens AHB11-ACR16-FL | Ark Lighting | Quad Tap | 400W MH equivalent | Wet locations, high bay suitability |
| Bluex Bulbs 400W MH Mogul | Bluex Bulbs | E39 Mogul | 36,000 | ED28 clear, high output |
| Rossesay 1 Pack 400W MH Mogul | Rossesay | E39 Mogul | 36,000 | 4000K, robust HID lamp |
| TJBB 2-Pack 120W LED Corn Light | TJBB | E39 Mogul (LED replacement) | 16,800 per bulb | LED retrofit option, ballast bypass advised |
Sunlite MH400/U/MOG Metal Halide Lamp Review

Sunlite’s 400W MH lamp provides a high lumen package with a 4000K color temperature and a mogul base (E39). This lamp targets outdoor lighting, parking areas, and large indoor spaces where fixture sockets can accommodate a larger bulb. The high brightness supports clear visibility in loading bays and walkways, while the 12,000-hour life helps reduce maintenance frequency. This product is sold in a two-pack, making it convenient for multi-lamp installations in high bay settings.
Ark Lighting High Bay Flat Lens 400W MH

Ark Lighting’s AHB11-ACR16-FL is a high bay fixture with a flat lens design built for metal halide operation at 400W. It is UL listed for wet locations, making it suitable for outdoor loading docks or indoor areas with moisture exposure. The quad-tap configuration supports flexible ballast wiring, enabling robust performance across varied electrical systems. This option emphasizes durability and reliability in demanding environments where uniform, glare-free lighting is essential for safety and efficiency.
Rossesay 400W MH Mogul Lamp

Rossesay offers a 400W metal halide lamp with an E39 mogul base and a 4000K color temperature. The lamp is designed to deliver 36,000 lumens in a compact, easy-to-install form factor suitable for large indoor or outdoor high bay fixtures. It emphasizes reliability and efficient lumen output, making it a common choice for warehouses, factories, and retail backrooms requiring consistent brightness and color rendering over time.
Bluex Bulbs 400W MH Mogul

Bluex Bulbs’ 400W metal halide bulb is designed for mogul bases with an ED28 clear finish and a typical 36,000-lumen output. The 4000K color temperature provides crisp, neutral white lighting ideal for industrial work areas, parking infrastructure, and outdoor facilities. This lamp is commonly used in high bay fixtures where direct, bright illumination contributes to safety and productivity in large spaces.
Konlite Alta High Bay LED (for comparison)

While not a metal halide lamp, Konlite’s ALTA High Bay Light offers selectable wattages (130W, 140W, 165W) and a 5000K/4000K color temperature with 120-277V operation. This option serves as a modern, LED-based alternative for high bay applications, delivering energy efficiency, dimming options, and flexible color tuning. It is useful for facilities evaluating LED upgrades or mixed-technology lighting plans alongside traditional 400W MH lamps.
Buying Guide
When selecting 400W metal halide high bay lighting, consider these factors:
- Fixture compatibility: Confirm ballast type, open vs enclosed fixtures, and any ballast bypass requirements during retrofits.
- Base and form factor: Most 400W MH lamps use an E39 mogul base; ensure socket compatibility and fixture clearance for maximum lumen output.
- Color temperature and CRI: 4000K–4200K is common for workspaces, with CRI values typically above 80 to render colors accurately in industrial tasks.
- Lumen maintenance and life: Expect thousands of hours of service; plan maintenance windows around lamp life and re-lamping cycles.
- Environmental conditions: Wet location ratings and durability in dusty or humid environments are important for outdoor and warehouse spaces.
- Energy considerations: Metal halide systems have higher energy consumption compared with LEDs; evaluate total cost of ownership, including maintenance frequency and energy costs.
- Retrofit options: For facilities exploring LEDs, some MH fixtures support ballast bypass or LED retrofit lamps; ensure electrical compliance and safety during conversions.
- Installation practicality: Consider ease of replacement, required tools, and whether immediate ballast bypass is feasible within the existing electrical system.
In summary, the listed metal halide 400W options provide varied configurations, with several top choices offering robust lumen output and reliable operation in high bay contexts. For facilities prioritizing energy efficiency, LED retrofit options exist, but traditional 400W MH lamps still deliver strong, uniform illumination in many industrial environments.