Safety Flag APF Heavy Duty Nylon Checkered Airport Flag Chemical-Resistant it can be used as

it can be used as either a personal diffusion monitor or a remote sample draw monitor

This can extend their life up to three years

12" Blower Duct for the RamFan 12" blower

Built-in reflective materials

Adjustable leg and shoulder straps for ultimate support and comfort

Safety Flag APF Heavy Duty Nylon Checkered Airport Flag Chemical-Resistant it can be used asThe Safety Flag APF heavy duty nylon flag is designed to be attached to structures in air traffic areas over a specified height like work cranes. It is 36" x 36" in size. It features the required orange & white checkers. It comes with a hem in which a staff (not included) can be inserted. Meets requirements for Airport Construction Jobs.