The Zilla Reflector Dome incandescent light fixtures are designed to deliver years of heat or light to reptile terrariums. Each is topped with a ceramic socket to withstand constant heat of bulbs up to 150 watts. The black exterior and reflective white interior finishes are powder-coated for added luster and long life. 6 ft. power cord with an in-line on/off switch is positioned near the fixture for easy use. Spring clips, to hold dome securely on screen top, are included.