Satco S3729 Intermediate Base 40-Watt S11 Light Bulb, Clear Manufacturer: sitcom products Manufacturer part Number: S3729 Saco incandescent appliance lamp S11, 40 watt, intermediate base, clear, 1,500 average rated hours, 20 per Box - 2474133 2500 average rated hours 40-Watt medium base White light bulb