Progress Lighting's P8709-20 is a Dark Sky Cup with a patent pending. It fits over a lamp to give an ambient down light. This Sky Cup created with a utilitarian design is suited for outdoor lighting. It converts most wall and chain hung lanterns into sky-friendly fixtures. This Antique Bronze Lamp Shield is used with a one-light medium-based lamp. It belongs to the Nightsaver family. It comes with an antique bronze finish which matches most lantern finishes. This P8709-20 Light Fixture is for A19 lamps mounted in a downward position. The lamp and the shield are installed as a unit. It has overall dimensions of 2 7/8" x 5". This product is manufactured by Progress Lighting, the home of first-rate lighting fixtures.