The Black Diamond Wall Wash is without a lamp or with a G4 Rectangular Wafer and is ready to install right out of the box with a frosted glass lens. There are three glass lenses from which to choose for the desired effect. The frosted and glass lenses offer a 98° horizontal beam spread and the prism lens expands the horizontal beam spread to 114°. The spun brass construction features a baked enamel finish in black(BK) or bronze(BZ). The Black Diamond Wall Wash features an adjustment system which allows for 18 points of articulation of the knuckle.