The 3M™ Versaflo™ Inner Collar zips into all 3M™ Versaflo™ M-Series shrouds and provides a comfortable respiratory seal for 3M™ Versaflo™ M-400 Series Helmets.
The 3M™ Versaflo™ Inner Collar is a required part of a 3M™ Versaflo™ Respiratory Helmet Assembly, M-405.