Product_description: ['1 Pc, 4 In. Round Raised Device Ring, 1-1/4 In. Raised, 2-3/4 In. Center to Center, Zinc Plated Steel Used to Mount Lighting Fixtures, Security Cameras, Motion Detectors & Devices', 'Garvin 4 Inch Round Raised Device Ring - 1-1/4 Inch Raised - 2-3/4 Inch Center To Center (54C3-1-1/4)