RV Designer Slam Cam. BRD and RVD have teamed up on a simpler, innovative and great hatch-hardware design. Slam Cams are a patented locking solution which allows access doors to be closed without turning the cam lock. Many new RVs are using as original equipment. Less parts, better closure.Compatible with many other locks. This user friendly design eliminates the need for separate catches, latches and locks; saving time, money and precious shelf space. This Model is a locking, 1 doors for cargo door locks.