The Westinghouse 100W E39 LED Capsule Light Bulb is ideal for applications that require extremely bright light sources such as hid or high wattage CFL and incandescent light bulbs. Perfect for barn/shop lighting, outdoor post top lanterns, and wall pack lighting, this LED turns on instantly to full brightness. Features universal mounting position so it can be installed base up, base down or horizontal. The high-quality corn cob design includes led chips on top to ensure directional light output, ideal for base-up applications. When compared to hid, this durable led maintains higher light output over the lifetime of the bulb and lasts longer than hid, CFL and incandescent alternatives. Westinghouse knows to light and offers products with exceptional quality, reliability, and functionality.