Leviton lamp holder, 1 pole, electro-mechanical, socket dimmer, 150 W lamp, 120 V, incandescent lamp, aluminum shell, Brass, UL listed, CSA/Nom certified. Leviton lamp holder, 1 pole, electro-mechanical, socket dimmer, 150 W lamp, 120 V, incandescent lamp, aluminum shell, Brass, UL listed, CSA/Nom certified.