Trim Ring, Brass Powder Coat, For Four Gang Ultra-Shallow Recessed Service Floor Box, 192 Cubic Inches for Device Access and 41/55 Cubic Inches for Device Compartments, Length 13-1/4 Inches, Width 15-1/4 Inches, Depth 2-1/2 Inches, 3/4 Inch Knockouts, Galvanized Steel, Provides High Capacity Power and Data Solution for Shallow Concrete Floors