3M Versaflo BT-64 Breathing Tube is designed to be used with 3M Full Facepiece Respirators FF-400 Series, 6000 Series, and 7800S Series and the 3M Versaflo Powered Air Purifying Respirator TR-600...
3M Versaflo BT-63 Length Adjusting Breathing Tube is designed to be used with 3M Full Facepiece Respirators FF-400 Series, 6000 Series, and 7800S Series and the 3M Versaflo Powered Air Purifying...