Use with high heat basking reptiles such as tropical and desert species.Increases the overall ambient air temperature for proper health and creates proper heat gradients necessary forthermoregula.Double Reflector Focuses 35% More Heat And Light Into A Tight Beam. Uva Rays Promote Breeding And Feeding And Are Beneficial To Psychological Well-Being.Dimensions (L x W x H):3.7 x 3.7 x 5.2