Oil bypass filter paper Basis Weight: 280+/-10gsm Filter paper width (height) available: 100mm-1200mm; Thickness: 0.8mm Diameter of the roll: around 78cm Air permeability at 200Pa: 70 L/m2.s Mullen (bursting strength) >=450kpa Maximum Pore Size 30um Volatile Content 4% Resin content 5%