Crafted from steel, featuring a brass, bronze, or nickel finish with a clear lacquer for added protection. 37" chandelier features 12 integrated 20-watt LED bulbs (included) and has an LED lifespan of 30,000 hours. 50" chandelier features 25 integrated 50-watt LED bulbs (included) and has an LED lifespan of 30,000 hours. 60" chandelier features 38 integrated 50-watt LED bulbs (included) and has an LED lifespan of 30,000 hours. 70" chandelier features 42 integrated 70-watt LED bulbs (included) and has an LED lifespan of 30,000 hours. Adjustable drop length ranges from 20.5" – 158". Can be mounted on a vaulted ceiling. Black PVC and copper cord measures 144" 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. Professional installation is required. ETL Certified Damp. In order to protect the delicate glass of this collection, some assembly upon delivery to your home will be required.