Ives offers a variety of architectural hinges that will cover any need commercial application while also exceeding code requirements. With tested durability and consistent superior performance, Ives architectural hinges get the job done. Recommended for medium weight doors (<150 lbs). Recommended for medium frequency usage (<400 cycles per day). Made with two concealed nylon bearings. Recommended for use with a door closer. Packed with fasteners for hollow metal and wood doors. Electrical through-wire provides electric power transfer from the frame to the door in order to supply power to an electrified mortise or cylindrical locks, exit devices with electric latch retraction, and/or electric strikes (pairs of doors). Each wire is 28 AWG and rated 50 volts AC/DC at 3.5 amp continuous and 16 amp pulse. Maximum pulse 400 milliseconds. Ives through-wire hinges are fully compatible with 4 wire (TW4) 8 wire (TW8) installations and 12 wire (TW12) installations. All TW4, TW8 and TW12 3 knuckle and 5 knuckle hinges are standard with the Allegion Connect 8-pin Connector which makes it easy to connect to other electrical consumption devices.