3M™ FF-300-925 Standard Viewfinder for FF-300 Mask.

3M FF-300-925 Standard Viewfinder for FF-300 Mask. 3M Reusable Mask Replacement Lenses are designed for use with 3M reusable masks. 3M Replaceable Lenses for Reusable Masks are quick and easy to install and can help extend the effective life of your 3M Reusable Mask if your mask becomes worn, scratched or your field of vision deteriorates. Help extend the life of your 3M reusable mask with replacement lenses To ensure safety and comfort, make it a habit to check and replace old or damaged parts as needed. For use with 3M reusable masks Quick and easy fit Replacement lenses and visors are easy to install when your current visor becomes worn, scratched or damaged Approved 3M replacement part