Mo-Flow Hydrophobic mesh is a water repellent, nonrestrictive material. It can be used as a prefilter for Racing and Powersports applications that prevents moisture and dust from passing through while allowing for unrestricted airflow. Other applications include but not limited to are Prefilter for Air Purifires, Stereo Speakers, Outdoor Electronics, Computers and Machinery. This material is a 100% polyester water-resistant woven mesh that can be used for electrostatic prevention. Acid resistant and dustproof. The mesh count is 130 per inch. Opening size is 115 Microns or .0045in. The material is 12" x12" and comes folded.