PLEASE NOTE THIS IS ONLY THE TRIM AND DOES NOT INCLUDE THE HOUSING, WHICH MUST BE ORDERED SEPARATELY. 4 Inch Premium Low Voltage Constructed of die cast aluminum or one piece spun aluminum for high quality and durability, Premium Low and Line Voltage Downlights feature a broad range of decorative and performance trims in abrasion resistant powder coat or plated metal designer finishes, for secured lamp positioning, low glare and superior performance photometrics in challenging residential and commercial projects. Die-cast aluminum construction Heavy gauge retention clips secure lens firmly to lamp Abrasion resistant powder coat paint or plated metal finish Variety of decorative and performance trim options Transformer and junction box accessible from below the ceiling Clear lens included, replaceable lens options available White/White Finish Made of Diecast Aluminum Bulb Type MR16 Lamp Base GU5.3 UL/ETL Listed For Damp Use Warranty 5 YearsDiameter Dimensions 5.125 Interior Diameter 3.5625 Item Weight 0.35 lb.