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Clear elliptical E17 HID bulb with medium E26 base

SYLVANIA

SYLVANIA 64818 M100/U/MED 100W Metalarc HID Bulb

SKU CH-GHJE-Q9MSR

A 100 W pulse-start metal halide lamp delivering 8500 lumens at 4000 K with a 12000-hour rated life

  • TypeHigh Intensity Discharge
  • Lumen Range8500
  • Wattage100
  • Color Temperature4000K
  • Life Time Hours12000
  • Color Rendering Index65
  • Delivers 8500 lumens for bright illumination
  • Pulse-start technology enables reliable ignition
  • 4000K colour temperature provides neutral white light
  • 12000-hour rated life reduces replacement frequency
  • E26 medium base fits standard enclosed fixtures

Application & Base

The SYLVANIA 64818 is a 100w Metalarc pulse-start high-intensity discharge bulb built for an E26 medium base. It delivers 8500 lumens at a 4000K colour temperature with a CRI of 65 and an average rated life of 12000 hours. The clear-finish E17 elliptical envelope is rated for use inside enclosed fixtures. This lamp suits commercial and industrial installations that require the M90/E ANSI code.

Fit & Limitations

The lamp fits fixtures accepting an E26 base and the M90/E ballast designation, making it appropriate for area lighting, warehouses and canopy retrofits. Buyers needing a different ANSI code, a mogul base, or a higher colour-rendering index should look at other options. The 12000-hour rating also means it is not the choice for projects demanding ultra-long-life sources without relamping.

Deciding Specification

The single specification that determines compatibility is the ANSI code M90/E; the ballast in the fixture must carry the same code for the bulb to start and run correctly. Without that match the lamp will not operate, regardless of wattage or base type.

Highlights

  • Delivers 8500 lumens for bright illumination
  • Pulse-start technology enables reliable ignition
  • 4000K colour temperature provides neutral white light
  • 12000-hour rated life reduces replacement frequency
  • E26 medium base fits standard enclosed fixtures

Specifications

BrandSylvania
TypeHigh Intensity Discharge
Lumen Range8500
Wattage100
Color Temperature4000K
Life Time Hours12000
Color Rendering Index65

Questions about this item

How much visible light does the 8500 lumen rating actually deliver in a real fixture?

The bulb produces 8500 lumens at 4000K with a CRI of 65, rated for enclosed fixtures with an E26 medium base.

What does the ANSI M90/E code limit when choosing a ballast?

The ANSI M90/E code identifies the lamp as a 100W pulse-start metal halide requiring a matching M90/E ballast for correct ignition and operation.

Will the E17 elliptical shape and E26 base fit my existing socket?

Yes, the bulb uses a standard E26 medium screw base and an E17 elliptical envelope measuring 17/8 inches in diameter.

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