MSA-35L-11-PK smoke absorber(10-pack) is a safe, space-saving, and efficient way to remove smoke and fumes created while hand soldering. Harmful fumes are drawn into the unit and absorbed by the activated carbon filter. The unit can be used in two positions: vertically (standing up), or horizontally (laying down). When used in the horizontal position (laying down), the unit’s airflow and effectiveness are increased. A useful, convenient, and safe workstation solution.