Approximate size of 5/16" drilled holes. Distance apart 3/4" to 7/8" center to center.
Approximate size of 1/4"‚ drilled holes. Distance apart 5/8" to 3/4" center to center.
Approximate size of 3/16" drilled holes. Distance apart 1/2" to 9/16" center to center.
Approximate size of 3/16" drilled holes. Distance apart 7/16" to 1/2" center to center.
