Crafted from steel, featuring a brass, bronze, or nickel finish with a clear lacquer for added protection. 17 chandelier features 12 integrated 20-watt LED bulbs (included) and has an LED lifespan of 50,000 hours. 17 chandelier has an adjustable drop length that ranges from 26.75 – 158. 24 chandelier features 19 integrated 42-watt LED bulbs (included) and has an LED lifespan of 50,000 hours. 24 chandelier has an adjustable drop length that ranges from 30.75 – 158. 36 chandelier features 34 integrated 60-watt LED bulbs (included) and has an LED lifespan of 50,000 hours. 36 chandelier has an adjustable drop length that ranges from 35 – 158. Can be mounted on a vaulted ceiling. Black PVC and copper cord measures 144 long. Hardwired; professional installation recommended. Mounting hardware included. Compatible with dimmer switch. 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. Safety tested for use in bathrooms, covered patios, or areas with temporary humidity and moisture. In order to protect the delicate glass of this collection, some assembly upon delivery to your home will be required.