RECTIFIER STACK FOR TYPE 575 MD122C POWER SUPPLY. The rectifier is a GR-707, 0-400 supply, md#106-0060.00 CS1k or A211CX278. It is new from old stock. The unit measures 5 1/2" long and stands 1 7/8" tall. They were purchased from the estate of Joseph Racy, a high caliber RF & Microwave engineer, who used such items in his lab. Please see pictures.