Ready to plug in, ceiling mount and light bulb included. This tall ballast comes from an old train repair shop and is signed Crouse-Hinds. Designed for indoor and outdoor use, fire and water proof. Great industrial fixture for a loft or man cave. Glass has a 16" diameter and a 16 1/2" height. Total height including ballast is 27 inches. Glass is very clean, no chips. Housing is a massive bolt and opens easily. Rewired