Incandescent Bulb, Speciality, Trilight, 50/150A21/WH/4M/130V/STD, 50/100/150 W, 130 V, 3 Continuous Medium E26d Lamp Base, A21, 520/1200/1720 lm, 4000 hr Average Life, White, CC-8/CC-8 Filament, 3-27/32 in L