Lithonia Lighting DSXF1 LED P1 50K M4 Outdoor LED 21W Floodlight Die-cast aluminum housing has integral heat sink fins to optimize thermal management through conductive and convective cooling Exterior parts are protected by a zinc-infused super durable TGIC thermoset powder coat finish Variety of precision-molded vacuum-metallized specular reflectors are engineered for superior field-to-beam ratios, uniformity and spacing Integral adjustable knuckle with 1/2-14 NPS threaded pipe Light engine(s) consist of chip-on-board (COB) LEDs