Fail-Safe's HDF high pressure hose down luminaire's sealed tubular design withstands water penetration, even when subjected to a 1200 PSI high pressure hose down test. Stainless steel hardware provides a water-tight seal by compressing a high impact resistant tube between two fully gasketed end plates. Water-tight connectors ensure the integrity of the seal at the point of power supply. The ballast channel is constructed of non-corrosive, non-rusting aluminum. An emergency battery pack is available as an option. It is manufactured in accordance with NSF standards and UL/CUL listed for wet locations.