Perfect for accent lighting and as a courtesy light for steps and walkways. Provide as much light output as a conventional12V incandescent bulb but uses 90% less power. Low heat makes them safer for enclosed areas. Has a long life and are resistant to vibration. Size: 3-1/4″L x 1-1/8″W and requires 11/16″ x 1-3/4″ rectangular cutout with with a gasket included. Mounts with two No. 6screws, NOT included.