Top quality fine stainless steel midge screen mesh material. 0.56mm hole Insect Screen Mesh is designed specifically to allow good airflow through an opening, whilst at the same time preventing midges and other tiny winged creatures from getting through. It is light and affordable and ideal for this purpose. The specifications of this mesh are as below: ---30 LPI (Lines Per Inch) ---0.28mm Wire ---0.56mm Aperture (Hole) ---Square Hole ---44.8% Open Area ---Can easily be cut with standard kitchen scissors The complex control process of insect proofing is an important step in making your building clear of unwanted bugs. Ideally, you can control insect levels by making it impossible for them to gain entry. Possible insect access points must be inspected and blocked off using insect proofing wire mesh.