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GE CMH70/PAR30L/830/FL40 70-Watt Metal Halide Lamp — main product image
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GE CMH70/PAR30L/830/FL40 70-Watt Metal Halide Lamp

★★★★★5.0 (1 reviews)

GE's 70W ConstantColor CMH PAR30L lamp delivers 4,700 lumens of crisp 3000K light with exceptional color consistency for retail and display use.

$41.68*
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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 GE CMH70/PAR30L/830/FL40 is a 70-watt ceramic metal halide lamp engineered for commercial and retail environments where light quality and color consistency matter. Built on GE's ConstantColor CMH platform, this lamp uses a ceramic arc tube rather than the quartz tubes found in conventional metal halide lamps, resulting in superior color stability over its 13,000-hour rated life. The 3000K warm white color temperature and 80 CRI make it particularly effective for merchandise displays, gallery lighting, and architectural accent applications where accurate color rendering enhances visual appeal.

Housed in a PAR30L reflector form factor with a 40-degree flood beam spread, this lamp delivers 4,700 initial lumens while fitting into standard E26 medium-base fixtures. The controlled beam angle provides broad, even coverage suitable for washing walls or illuminating larger display areas. As with all metal halide lamps, a compatible pulse-start ballast is required for operation, and users should account for a brief warm-up period to reach full output. For facilities still operating on metal halide infrastructure, this lamp offers a high-performance option that balances output, efficiency, and color quality.

Specifications

Wattage
70 Watts
Lamp Type
Ceramic Metal Halide (CMH)
Form Factor
PAR30L
Base Type
E26 Medium Screw-In
Color Temperature
3000K
Beam Spread
40° Flood (FL40)
Luminous Flux
4,700 Initial Lumens
Color Rendering Index (CRI)
80
Average Rated Life
13,000 Hours
Brand
GE
Model
CMH70/PAR30L/830/FL40

Pros & Cons

👍 Pros

  • High lumen output of 4,700 lumens from only 70 watts provides strong energy efficiency
  • ConstantColor ceramic technology maintains consistent 3000K color throughout the lamp's 13,000-hour life
  • PAR30L form factor with FL40 beam spread delivers controlled, even flood illumination
  • CRI of 80 renders colors more accurately than standard metal halide lamps
  • Standard E26 base ensures broad compatibility with existing fixtures

👎 Cons

  • Requires a compatible pulse-start ballast, adding cost and complexity to installation
  • Metal halide lamps have a warm-up period of several minutes before reaching full brightness
  • Cannot be dimmed with standard dimming systems
  • Lamp must cool before restriking, causing delays if power is briefly interrupted
  • Less energy-efficient than newer LED PAR30L alternatives at comparable lumen output

Frequently Asked Questions

It uses a standard E26 medium screw-in base, which fits most common commercial and residential fixtures designed for PAR30L lamps.
The GE CMH70/PAR30L has an average rated life of 13,000 hours, making it a long-lasting option that reduces the frequency of replacements.
This lamp has a 40-degree flood (FL40) beam spread, providing broad, even illumination suited for accent and display lighting.
Yes, like all metal halide lamps, the CMH70/PAR30L requires a compatible pulse-start metal halide ballast rated for 70 watts.
ConstantColor is GE's designation for ceramic metal halide technology that maintains consistent color temperature and quality throughout the lamp's life, minimizing the color shift common in standard metal halide lamps.

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