Ventilation property 0.02 - 20l/cm2minPa  , Compressive strength 0.5-1.5MPa

Heat resistance 280 Celsius Degree  , Maximum operating pressure differential 0.6 MPa

Outside Diameter 30 mm x Inside Diameter 25 mm x 125/250/500 mm

Outside Diameter 50 mm x Inside Diameter 45 mm x 125/250/500 mm