AH120501 New Stone Trap Door Fits John Deere Fits JD Combine Models 9600 9610One New Aftermarket Replacement Stone Trap Door Fits John Deere (Fits JD) Combine This aftermarket replacement stone trap door fits in the feeder house section of Fits John Deere 9600 and 9610 combines. The stone trap door is located in the crop feed path between the feeder house elevator and the threshing cylinder. When a rock or hard object is detected, the door opens to eject the object before it can reach and damage the threshing cylinder,