The PA-1104-BT is a 4U relay rack panel designed for standard 19-inch rack installations. It features a Type B configuration with dimensions of 6.97 inches [177.0 mm] in height and 4.00 inches [101.6 mm] in depth, constructed from 0.13-inch [3.2 mm] thick aluminum material. The panel is available in multiple finish options including metallic gray, white texture, and black texture to match various installation environments. This panel is commonly used in telecommunications, audio/video, and industrial control systems where standardized rack-mounted equipment organization and signal distribution are required.