We need filters paper for (air intake filters): Grammage 110 g/m2 Thickness 0.40 mmCorrugation depth 0.30 mmBurst strength 480 KpaMax pore 55.5 um Many pores 39 umAir permeability 186 l/m2*s color blue media (synthetic poly) it contains microglass and synthetic fibre and a lot of binder , (tow layers bonded),(looklike donaldson paper for gas turbine air intake filters) Qty : open Thanks!