DSC PC5003c is the same cabinet that all the DSC Power Series alarm systems come with. It is approximately 12"x 12" and 3" deep. It is the largest cabinet available for the Power Series. This cabinet will hold up to three PC5108 / PC5208 expanders AND one large board such as a PC5204 OR PC5580 AND one small board such as the IT-100 data Interface board. It may be possible to house two large boards, however you would likely have to drill mounting holes for at least one of the boards. This cabinet DOES NOT include a cabinet lock. Cabinet locks are available separately.