Perforation Calculation: Open Area of Perforated Metal Sheets
Open area normally refers to the hole surface area in percent that perforated on a metal sheet. For example, if the open rate is 40%, it means there are 40% of perforation holes, 60% of metal.
Here we list the open area percent formulas and online calculation , we hope it helps you to determine hole sizes easier and more convenient.
Round Perforation - 60 Degree Staggered
Round Perforation - 45 Degree Staggered
Round Perforation - Straight Line
Square Perforation - Straight Line
Square Perforation - Staggered
Hex Perfoation
Round - End Slot - End Staggered
Round - End Slot - Side Staggered
Round-End Slot - Straight Lines
Rectangular Perforation - Straight Lines
Rectangular Perforation - Staggered
