- Place the respirator over your nose and mouth with bottom straps unfastened.
- Pull the top strap over your head, placing the head cradle on the crown of your head.
- Hook the bottom straps together behind your neck.
- Adjust strap tension to achieve a secure fit.
What is the shelf life of 3M™ Cartridges? Provided they are stored unopened in the original packaging and away from direct sunlight, humidity and sources of high temperature, cartridges will last five years from manufacture date.