Indoor or outdoor installation for construction sites, walkways, parking lots, festivals, waterfront shipping docks and more. Snap-on, snap-off cage for easy replacement. 150 watt rating for ample illumination. Sockets on 10 foot centers. Stonco Deluxe CordLytes are intended for temporary installation at job sites subject to extreme conditions. They are designed to be impervious to dust and dirt, as well as corrosive environments such as chemical vapors and saltspray.