The Schlage Electronics 788-12 flexible armored door cord for electric exit devices and electric lock systems protects electrical wires transmitting power between a door and its frame. The armored cord is 12" long with a 5/16" inside diameter and a 3/8" outside diameter and includes end caps. The cord accepts wires in the following combinations: five 18-gauge wires; two 18-gauge and four 20-gauge wires; two 18-gauge and seven 22-gauge; seven 20-gauge; and twelve 22 gauge wires.Schlage Electronics, an Allegion brand, manufactures security products for commercial and residential use. Allegion is headquartered in Carmel, IN.What's in the Box?788-12 armored door cordEnd capsMounting hardwareInstructions