wood pulp filter paper for auto filters,air filter,oil filter,fuel filter TypeModelBasis Weight ±5g ... mg)Bursting Strength(≥kpa)Corrugation Depth±0.05mmResinContent±2%Air filter paperK1101100.3850080751800220-/0.2520K1201200.3938070651800260-/0.2520K1301300. ... High stiffness and burst resistanceApplication:Auto air filters, Auto fuel filters, Auto oil filters, etc. auto filter paper for air filters