CLICK ME FOR THE 72 T-NUT PATTERN LAYOUT PDF
The standard T-nut layout for years has been the 72 T-nut pattern. 72 T-nuts is how many T-nuts you will install on a 4' x 8' sheet of 3/4" ACX plywood. You would choose this pattern if you are building a school wall or a trampoline park. There are limitations with the 72 pattern as the vertical space between t-nuts is 16" apart in a straight line. That can leave a lot of open space between holds. If you want to set routes and boulder problems, scroll down to the 128-pattern.
CLICK ME FOR THE 128 GRID T-NUT LAYOUT PDF
The 128 T-nut grid pattern uses 6" spacing to provide more hold placement options than the 72 T-nut pattern panels. This is the recommended T-nut pattern for System walls since they must be symmetrical with a tight T-nut spacing. This 128 T-nut grid pattern makes setting up repeating holds/moves easy.

How to Drill Multiple Climbing Wall Panels for T-Nuts:
Click here for a complete guide on drilling your panels for T-Nuts