Crafted from multifaceted K9 glass crystals with an iron frame and oil-rubbed finish. Uses nine 40-watt E12 lights. We recommend energy-saving LED lights. Hardwired; professional installation recommended. Mounting hardware included. Safety tested for use indoors and in dry locations that are not directly exposed to excessive moisture and water. In order to protect the delicate crystals of this collection, some assembly upon delivery to your home will be required.