MSA Affinity 1221 P2 Respirator with Exhalation Valve, Disposable Box of 10. Colour Coded Yellow. Effective, reliable and economical, the cup-shaped Affinity 1200 series protects against most penetrating solid and liquid aerosol particles, depending on which class of ï¬lter issued. Protection Class P2 Applications include machining, welding, brazing, plastering and insulation installation. Certified to AS/NZS 1716:2012.