RCI 95216 4.5" X 4.0" Electrified Hinge - 24VAC/DC Brushed Chrome
Electric Hinge Series - BEST
Amazon.com: Seco-Larm SD-H412 Electric Transfer Hinge, Provides A Vandal-resistant Method For Protecting And Concealing Wires Between A Hollow Door And Door Frame, Dimensions 4.5"x4.5"x 0.125"