Open Percent Formulas

Determine the Percentage of Open Area

Calculate the Percentage of Open Area

Use these formulas to determine the percentage of open area related to the holes per square inch in your perforated metal product fabricated by Accurate Perforating.

Round – 60° Staggered Center

* Holes per square inch

Round – 40° Staggered Center

* Holes per square inch

Round – Straight Center

* Holes per square inch

Round End Slot – Staggered and Straight Center

* Holes per square inch

Square End Slot – Straight Center

* Holes per square inch

Square – Straight Center

* Holes per square inch

Hexagon

* Holes per square inch