This 4" Round Cylinder is a versatile lighting solution designed for both new construction and retrofit commercial or architectural applications. It mounts easily to a standard 4" Octagonal J-Box and features a service-friendly design with the light engine and driver readily accessible for maintenance. An aluminum reflector with a semi-diffuse anodized finish provides a 45° visual cutoff for comfortable illumination, while delivering performance ranging from 500 to 3,000 delivered lumens at up to 100 lumens per watt. The cylinder is available with an optional emergency battery backup and offers flexible mounting options including surface, stem (18", 30", or 42"), or adjustable cable mounting. A full range of optical distributions—spot, narrow, medium, wide beam, and wall wash—allows precise light control to suit a wide variety of spaces.