A-type Double Contact Base

These lamps are designed for European designed light sockets while conforming with the standard United States electrical rating of 120 volts to 130 volts.  The base type of these lamps is B22D which is a medium double contact base with two contact points on the bottom of the lamp base and two location pins on opposing sides of the base.  Available wattage lamps range form 40 watt to 100 watt typically in frosted finish.