Use with Sundström SR100, SR200, SR500 and SR700 respirators for protection against all types of wet and dry particles, such as: Dust Smoke Aerosols Spray Asbestos Bacteria Viruses Mould Removes 99.997% of all particles from the air you breathe. The filter flange features an O-ring that optimises the seal to the front rim of Sundström gas filters. The filter has regular (class 1) capacity. Approved to AS/NZS 1716:2012 Features Plastic polypropylene - no metal parts The filter fits into Sundström half and full face masks, as well as the SR700 particle PAPR. The filter can be attached to Sundström non-threaded gas filters. It is also used on front of Sundström's threaded gas filters when used on the SR500 PAPR Largest diameter: 107 mm, Thickness: 31 mm Weight: 44 g Filtration paper: Particle filter contains about 1,300 sq cm (200 sq inches) hydrophobic fibreglass paper Filtration efficiency: Paraffin oil aerosol: >99.997% (tested by INSPEC) Drop pressure: At 30 l/min: 40 Pa (standards requirement: