NSi Round Back Floodlights are constructed of heavy duty die cast aluminum and corrosion resistant hardware. Silicone gasketing, impact resistant tempered glass and anodized aluminum reflector. UL and CUL Listed for wet location use. Great for use in park and recreational lighting, sports fields and back yards. Easy entry with only two screws and linear hinge; mounts with NPT threaded knuckle assembly. Sodium Lamp included.