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Command Access ETH6W 4.5 X 4.5, 626 Energy Transfer Hinge - ACCESS HARDWARE
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"