deep and 2-3/4 in.
Ball Bearing Steel Sliding Door Roller Assembly, Pella It is driven into a rectangular mortise in the bottom of the door.concave rollerStamped steel housing and steel ball bearing rollerEasy to installAdjustment screw should face edge of doorA Phillips head screwdriver is required for installationFor further dimensional information, please see the line drawing This is a Drive-In style patio door roller assembly used on Pella wood patio doors.