This is the chip deflector (6292663) for the Powermatic 20" planers.  This deflector directs the chips out the shoot and keeps them from being pulled down the back side of the head and getting pressed into the planed board. They will also get sucked back under the knives and get cut again.  This one will fit the 20" Powermatic, Jet, General, and others.   The hole spacing is approximately 6-3/16" on center.   Shipping on this item is free via USPS or UPS. I do combine shipping wherever possible. I do ship internationally.