Atlas Sound FB4-XLRF floor box assembly provides a simple solution for recessed mic inputs. The unit is designed for easy installation into wood stages and platforms. (4) Female XLR connectors are recessed and slant loaded into the enclosure. A hinged steel cover plate provides protection for cable connectors. Connectors are standard "D sub" type and may be easily removed to allow substitution of other "D sub" devices. May be used in concrete pour applications with the optional FB4CPB pour box.