1.1 ,This specification covers the general requirements for the Type IV Cargo Bed Cover (CBC). The Type IV CBC is a removable general purpose rigid wall enclosure that is mounted to the following model 5 ton cargo trucks: (1) the M923 Medium Tactical Vehicle (MTV) and (2) the M1083 MTV. It also can be mounted on the M1095 5 Ton MTV Trailer. The CBC provides environmental protection and security for mission equipment and items of general transport.