3M™ Secure Click™ Particulate Filter P3, D7935 (Box of 20 Pairs)3M Secure Click Replaceable Particulate Filter P3, D7935 is AS NZS 1716 approved for environments containing certain solid and liquid particles. Use with 3M Secure Click Respirators HF 800SD Series and 3M Secure Click Cartridges D8000 Series and 3M Filter Retainer D701. P3 protection achieved only when worn with a 3M Full Face Respirator. Our lightweight filters combine protection with comfort. They offer low breathing resistance and good balance when