30 watt Edison-Marconi bulb

  • Houzz

This light bulb is a reproduction of early Edison bulbs, with a beautiful glowing tungsten filament.

It offers a very warm 120 lumen output. This is not a high-efficiency bulb, but it has the "cool factor" that can be just right as an accent piece. Named after Guglielmo Marconi, an early developer of radio, these bulbs are reminiscent of vacuum tubes in antique radios.

  • Brightness: 120 lumens (similar to an 18 watt standard filament bulb)
  • Estimated yearly energy cost: $3.61 (based on 3 hrs/day. 11c/kWh. costs depend on rates and use)
  • Life expectancy: 3000 hrs = 2.7 years (based on 3 hrs/day)
  • Light Appearance: 2400K (warm white)
  • CRI (Color Rendition Index) 100 (incandescent)
  • 2-1/2" diam, 4-5/8" H beyond the socket