Crafted from multifaceted K9 glass crystals with an iron frame and oil-rubbed finish. 15 chandelier uses six 40-watt max E12 lights. We recommend energy-saving LED lights. 20 chandelier uses eleven 40-watt max E12 lights. We recommend energy-saving LED lights. 32 chandelier uses 22 15-watt max E12 bulbs we recommend energy-saving LED lights. Chain measures 6' long. Hardwired; professional installation recommended. Mounting hardware included. Chandeliers weighing more than 50 lbs. cannot be mounted alone to a standard outlet box and require additional bracing above the ceiling where they are to be installed. Additional chain may be available to purchase by request. Please contact our Concierge Team for details. 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.