Product Type Optional Blower, Compatible with Product Type Wall Furnaces, Compatible Grainger Part Number 48CH54, 48XH55, 48XH56, 48XH57, 48XH58, 48XH59, 4LGE4, 4LGE5, 4LGE6, 4LGE7, 4LGE8, 4LGE9, Compatible Mfr. Model Number GWT-25, GWT-35, GWT-50, Overall Height 4 7/16 in, Overall Width 12 1/2 in, Overall Depth 4 in, Number of Speeds 1, Voltage 120 V AC, Air Flow 100 cfm