The AtlasIED FB4-XLRF floor box assembly provides a simple solution for flush-mounted microphone inputs. The unit is designed for easy installation on wooden stages and platforms. (4) The female XLR connectors are recessed and slope-loaded into the cabinet. A hinged steel cover plate provides protection for the cable connectors. The connectors are standard "D sub" type and can be easily removed to allow replacement of other "D sub" devices. Can be used in concrete pouring applications with the optional FB4CPB pour box.