Ushio

Ushio BC1818 MHL-450 450W Metal Halide Bulb

450W

High-intensity 450W metal halide lamp delivering brilliant, clear illumination with an R7s recessed single contact base.

$122.61*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Ushio BC1818 MHL-450 is a 450-watt metal halide lamp engineered for high-intensity lighting applications where powerful, clear illumination is essential. Operating at 140 volts through a compatible ballast, the lamp produces a bright, crisp output from its clear glass envelope, making it well-suited for commercial, industrial, and specialty lighting installations that demand strong lumen output and good color rendering. The R7s recessed single contact base is a widely adopted standard, allowing the MHL-450 to fit a broad range of existing fixtures designed for double-ended linear metal halide lamps.

With an average rated lifetime of 500 hours, the MHL-450 is positioned for applications where run time is measured and maintenance schedules are planned, such as stage and event lighting, architectural accent lighting, and industrial flood lighting. As with all metal halide sources, the lamp requires a warm-up period to reach full output and a cool-down period before restrike. Ushio's reputation in specialty lighting manufacturing provides confidence in consistent arc tube quality and reliable ignition performance across the lamp's rated life.

Key Features

Color/Finish: Clear

Average Lifetime: 500 hours

Manufactured in Japan

Specifications

Model
BC1818 (5000114)
Wattage
450W
Voltage
140V
Base Type
Recessed Single Contact (R7s)
Bulb Finish
Clear
Average Lifetime
500 hours
Brand
Ushio

Pros & Cons

👍 Pros

  • 450W output delivers high-intensity illumination suitable for professional and commercial lighting
  • Clear finish provides maximum brightness without diffusion for crisp, focused light
  • R7s recessed single contact base is a widely used standard, ensuring broad fixture compatibility
  • Ushio manufacturing offers consistent quality and reliable performance

👎 Cons

  • 500-hour average lifespan is relatively short, leading to more frequent replacements
  • Requires a compatible 450W metal halide ballast, adding to the total system cost
  • Metal halide lamps need a warm-up period of several minutes to reach full brightness
  • High wattage consumption results in significant energy use compared to modern LED alternatives
  • Lamp must cool down before restrike, causing delays if power is interrupted

Frequently Asked Questions

It uses a recessed single contact R7s base, which is a standard double-ended linear lamp socket found in many commercial and industrial fixtures.
The Ushio MHL-450 has an average rated lifetime of 500 hours.
The bulb has a clear finish, which produces a crisp, unfiltered light output suitable for applications where maximum brightness and clarity are needed.
Yes, like all metal halide lamps, the MHL-450 requires a compatible 450W metal halide ballast for proper ignition and operation. It cannot be connected directly to line voltage.
The lamp operates at 140 volts, which is supplied by the ballast rather than directly from mains power.