3M Tr-371 Replacement Filter Cover For Tr-300 Series Papr

• Holds TR-3700 Series Filter on TR-300 series PAPR
• Window enables user to see filter label
• Easy to install

3M Filter Cover TR-371, for Versaflo TR-300N+ Series PAPR, 1/Case. Filter cover TR-371 is a direct replacement for filter cover TR-370. Used with TR-3710N and TR-3712N filters on TR-300 series PAPRs.