What is the size of the Board Hole on a 1'' or 2'' Board with Holes? August 03, 2020 15:36 5/8 of an inch Related articles How far does a 2'' Anchor Joint extend into the ground? What is the actual width of a 1'' Straight or Curved Composite Board? How far does a 1'' Anchor Joint extend into the ground? What is the difference between Frame It All 1 Inch and 2 Inch Profile Boards? Video Gallery/ Video Library/ Video Tutorials