Product Details  Coarse Nylon Mesh Filter Media ,muti-layer structures,hard farm ,no easy distort,dust filter and prefilter in air conditioning . Model Name:YM-SB-MH250b Coarse Nylon Mesh Filter Cotton/Auto filter and A/C conditioner filter media Model:  YM-SB-MH180 YM-SB-MH250 Applications: Automobiles Air Filter Air Conditioner Filter/Purify System Designed for the Removal of : 1 - 5 Microns,Atmospheric Dusts,Bacteria,Descending,Impurities...... Available Data: Made of synthetic nylon fibre and heat cotton Filter Class: F6-F7 Width(mm): 40"(can be split) Grammage (g/m2): 180-250 Thickness (mm): ≥1.70±0.05 Air Permeability (p=200pa L/m2.s) :1600-3000