Safety Works P100 Toxic Dust Replacement Filter Cartridge (2-Pack) Steel Pro Thumbscrew provides user with a

Thumbscrew provides user with a more convenient geometry for hand force

Magnum security lock and hasp is ideal for applications such as delivery vehicles

Ideal for use in tight space with ceiling or wall installation

Mortise or drive-in

double doors with windows

Safety Works P100 Toxic Dust Replacement Filter Cartridge (2-Pack) Steel Pro Thumbscrew provides user with aP100 filters offer the highest level of dust protection available in a NIOSH (National Institute for Occupational Safety and Health) approved cartridge. Cartridges feature an air flow opening positioned at the back of the cartridges so that the dust and debris is less likely to clog the filters. The opening also facilitates blocking the cartridges with thumb for an easy fit check when on the respirator.