Eiko 100A/RS, 130V 100W - Inside Frost A-19 Medium Base - Rough Service Light Bulb (Pack of 30) Vibration resistant rough service bulb, frosted 130 volts, 100 watts Medium screw (E26) base A-19 bulb This product is exempt from the new minimum efficiency standards defined by EISA. This product is considered a Rough Service lamp and Rough Service lamps are exempt from the new minimum efficiency standards defined by EISA.