We carry a full line of options, accessories and replacement parts for all your building intercom and entry system needs. HDI accessories and replacement parts are designed to fit within or on your existing lobby panel or apartment station space minimizing your installation and repair costs. Just tell us what you’re looking to do or the dimensions of the existing part and we’ll provide you with a new part to fit. Remember when you use HDI replacement parts you probably won’t have to repair or repaint the wall (unless you really want to!).