GE Lamps Quartzline incandescent lamp is A-21 shape clear finished lamp with E26 medium screw base. It is made of soft glass with CC-8 filament and has light center length of 4.06 inch. It has voltage rating of 120 volt and power rating of 200 watt. Clear glass and elegant filament design provide a decorative touch to fixtures where the bulb is visible. Lamp measures 2.625 inch diameter x 5.370 inch and has average lifetime of 750 hour. It is ideal for use in party lights, table lamps and enclosed fixtures. Great for use in table lamps and enclosed fixtures Lasts .7 years based on 3 hours per day usage Estimated yearly energy costs $24.09 based on 3 hours per day $0.11 per kWh A21 shape with medium base 2900K 3780 lumens providing strong, vibrant light 200 watts Add sparkle to your decorative fixtures with GE crystal clear bulbs. The clear glass and elegant filament design provide a decorative touch in fixtures where the bulb is visible.