The 1ST-CSRHB Contractor Select LED Round High Bay delivers high-output illumination for warehouse, manufacturing, gymnasium, and industrial applications. Its compact round G2 design with ribbed polycarbonate lens is available in 11″, 12″, and 13″ diameters and provides wide, low-glare light distribution. This fixture features Power Select and Color Select technology with three CCT options (3000K, 4000K, and 5000K). It includes 0-10V dimming and a built-in sensor receptacle for quick screw-in sensor installation. The fixture is IP65 wet location rated with a powder-coated aluminum housing. J-hook mounting hardware and a 6-foot cord are included. It offers a wide operating temperature range from -40°C to 50°C, low optical flicker, 6kV surge protection, and an L70 lifetime exceeding 100,000 hours for long-term reliability in tough environments.