Stanley CEFBB179-54, 5″ x 4.5″ 26DStandard Weight, 4-Wire Electric Hinge, Satin ChromeCondition:* New Stock, In OEM Packaging. As Pictured.Additional Notes:* Steel polished and plated or phosphated and prime coated for painting* For medium weight doors of average frequency* Hinges have template screw hole location for use on either wood or hollow metal doors and frames* Equipped with two Stanley permanently lubricated non-detachable ball bearings* Pins in non-ferrous hinges are stainless steel* Hole in bottom tip for easy pin removal* Reversible flush tips and pins* Size Open: 5″ X 4-1/2″ (127mm X 114mm)* Gauge of Metal: .146″ (3.7mm)* Flat Head Screws: Machine; 8-12-24 x 1/2, Wood; 8- 12 x 1-1/4* Conduct current regardless of door position to electric locks, exit devices, or hold open devices where tamper-proof hinge is required.* Also to transmit signals from code readers on doors to remote computers for access control.* Number of Wires: 4* Wire Size: 28 GaugeStanleyCEFBB179-54