Square D Schneider electric HF26E 29.62 Inch (1 inch equals 25.4 millimeter) Horizontal Edgewise Mounted Hanger; Used On (or to be used on/with) I-Line[R 4000/5000 Ampere ( An ampere is the unit used to measure electric current.) Busway; Bus Bar Material Aluminum/Copper . SQUARE D : BUSWAY HANGER, EDGEWISE