The Trend AIR/9/1 Filter Pack is suitable for the AIRSHIELD PRO. Respiratory protection BS EN 12941:1999, respiratory devices, powered filtering class TH2P-S.It is for use against solid particulates only. Filter efficiency 98% with a minimum laboratory protection factor of 50 and is Suitable for MDF. TH2P-S filter pack for the AIRSHIELD PRO. Respiratory protection BS EN 12941:1999, respiratory devices, powered filtering class TH2P-S. For use against solid particulates only. Filter efficiency 98% with a minimum laboratory protection factor of 50. Suitable for MDF. Specifications For AIR/PRO Filter type TH2P-S Quantity One pair