Twin half mask respirator featuresa general purpose half mask offering maximum protection and comfort extra wide sealing surface to give unparalleled comfort and fit low resistance exhalation valve wide adjustable elastic strap for a perfect fit low profile angular filter design for minimum visual impairment the tradesman 2 is maintenance free semi disposable mask supplied complete with filter cartridges there is no need to keep coshh records when using this mask the mask can be used until the f