The FAD Series FIRE ALARM DOCUMENT and SRD Series SYSTEM RECORD DOCUMENT boxes ensure compliance with NFPA 72 document storage requirements. Standard features include 16 ga steel construction with red powder coat, piano hinge, and key lock (except SRD). A removable document holder and space for a can of detector test gas are standard as are key ring hooks, a business card holder, a CD case slot, and an important notes sticker for the door. 4G models include a 8GB flash drive for digitally storing fire alarm system software, programming, etc.