3M Versaflo TR-600 Powered Air Purifying Respirators are versatile and easy-to-use respiratory protection against certain gas and vapors and combined with filters for protection against particulates.3M Versaflo TR-600 Powered Air Purifying Respirator Systems are engineered for versatility and customization and offer a variety of headgear, breathing tubes, and accessories to create a customized PAPR solution.