When the job demands strength and reliability, the Metalux SPHB Linear LED High bay delivers. Built tough with an IK10 impact rating and steel chassis, it's engineered to withstand harsh industrial environments, high-traffic areas, and anywhere durability is key-from warehouses and barns to retail spaces, gyms, and beyond. Select your output (12,000/18,000/24,000 lumens) and color temperature (4000K or 5000K) to optimize any space.Electronic drivers support 120-277Vsystems, while the compact linear design ensures easy installation. The SPHB is sensor ready with included sensor port. The sensor port allows quick plug-and-play installation of the sensor in the field, enabling basic lighting control, energy savings and flexibility to meet your facility's evolving needs. With up to 154 lm/W efficiency and a long-life LED system, the SPHB offers years of dependable, low-maintenance performance. Sensor sold separately as UHBS-SENSOR PK.Designed and tested in the USA by Metalux-contractor-preferred for over 60 ears, and backed by a 5-year limited warranty. Color: White. Material: Polycarbonate.