Abstract: A pneumatic tube carrier system (10) includes a first carrier receiving and sending terminal (11) and a second carrier receiving and sending terminal (13). A carrier (20) is transported back and forth between the terminals (11,13) through a pneumatic tube (12) interconnecting the first and second terminals. Means are operatively associated with at least one of the first and second terminals for automatically removing contents from the carrier at the at least one terminal before returning the carrier to the other terminal. A cover (30) is held on the carrier by magnetic attraction and without hinges or latches.