OPTREL Clearmaxx + Swiss Air Grinding Pack with Control Panel Optrel OPTREL Clearmaxx + Swiss Air grinding pack with control panel – complete personal protective solution designed for grinding and surface preparation tasks in industrial environments exposed to dust and fine particles; this set combines the OPTREL Clearmaxx protective face shield with the Swiss Air powered air system and integrated control panel, delivering reliable respiratory protection, wide field of vision, and high comfort for applications such as metal grinding, machining, industrial maintenance, and manufacturing workshops. Learn more