Sylvania | 64439 | MS175/HOR | 175W Metalarc Metal Halide
This is a 175 watt metal halide lamp with a BT28 shaped glass, clear finish, 4000K, and a E39 mogul base. The average lamp life is 10,000 hours. Metal halide bulbs are a member of the high intensity discharge (HID) family of lamps. They produce high output relative to their size making them a powerful, compact, efficient light source. Metal halide bulbs are used in many commercial lighting fixtures like (wall packs, area lighting, roadway, high bays) and because of their wide spectrum are also highly used in indoor growing applications.
Rated to be used in an enclosed fixture