
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*
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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
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
What base type does the Ushio MHL-450 use?
It uses a recessed single contact R7s base, which is a standard double-ended linear lamp socket found in many commercial and industrial fixtures.
What is the rated lifespan of this bulb?
The Ushio MHL-450 has an average rated lifetime of 500 hours.
What type of finish does the bulb have?
The bulb has a clear finish, which produces a crisp, unfiltered light output suitable for applications where maximum brightness and clarity are needed.
Does this lamp require a ballast to operate?
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.
What voltage does the Ushio MHL-450 operate at?
The lamp operates at 140 volts, which is supplied by the ballast rather than directly from mains power.